diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/lua/Conversions.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/lua/Conversions.kt
index c2b184a0..1a36be37 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/lua/Conversions.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/lua/Conversions.kt
@@ -52,14 +52,14 @@ fun LuaThread.getLine2d(stackIndex: Int = -1): Line2d? {
 	push(1)
 	loadTableValue(abs)
 
-	val x = getVector2d(abs + 1)
+	val x = getVector2d()
 	pop()
 	x ?: return null
 
 	push(2)
 	loadTableValue(abs)
 
-	val y = getVector2d(abs + 1)
+	val y = getVector2d()
 	pop()
 	y ?: return null
 
@@ -90,14 +90,14 @@ fun LuaThread.getVector2d(stackIndex: Int = -1): Vector2d? {
 	push(1)
 	loadTableValue(abs)
 
-	val x = getDouble(abs + 1)
+	val x = getDouble()
 	pop()
 	x ?: return null
 
 	push(2)
 	loadTableValue(abs)
 
-	val y = getDouble(abs + 1)
+	val y = getDouble()
 	pop()
 	y ?: return null
 
@@ -128,14 +128,14 @@ fun LuaThread.getVector2f(stackIndex: Int = -1): Vector2f? {
 	push(1)
 	loadTableValue(abs)
 
-	val x = getFloat(abs + 1)
+	val x = getFloat()
 	pop()
 	x ?: return null
 
 	push(2)
 	loadTableValue(abs)
 
-	val y = getFloat(abs + 1)
+	val y = getFloat()
 	pop()
 	y ?: return null
 
@@ -168,9 +168,9 @@ fun LuaThread.getVector2iOrAABB(stackIndex: Int = -1): Either<Vector2i, AABB>? {
 	pop()
 
 	if (type == LuaType.NUMBER) {
-		return Either.right(getAABB(stackIndex) ?: return null)
+		return Either.right(getAABB() ?: return null)
 	} else {
-		return Either.left(getVector2i(stackIndex) ?: return null)
+		return Either.left(getVector2i() ?: return null)
 	}
 }
 
@@ -223,14 +223,14 @@ fun LuaThread.getVector2i(stackIndex: Int = -1): Vector2i? {
 	push(1)
 	loadTableValue(abs)
 
-	val x = getLong(abs + 1)
+	val x = getLong()
 	pop()
 	x ?: return null
 
 	push(2)
 	loadTableValue(abs)
 
-	val y = getLong(abs + 1)
+	val y = getLong()
 	pop()
 	y ?: return null
 
@@ -262,28 +262,28 @@ fun LuaThread.getColor(stackIndex: Int = -1): RGBAColor? {
 	push(1)
 	loadTableValue(abs)
 
-	val x = getLong(abs + 1)
+	val x = getLong()
 	pop()
 	x ?: return null
 
 	push(2)
 	loadTableValue(abs)
 
-	val y = getLong(abs + 1)
+	val y = getLong()
 	pop()
 	y ?: return null
 
 	push(3)
 	loadTableValue(abs)
 
-	val z = getLong(abs + 1)
+	val z = getLong()
 	pop()
 	z ?: return null
 
 	push(4)
 	loadTableValue(abs)
 
-	val w = getLong(abs + 1) ?: 255L
+	val w = getLong() ?: 255L
 	pop()
 
 	return RGBAColor(x.toInt(), y.toInt(), z.toInt(), w.toInt())
@@ -313,28 +313,28 @@ fun LuaThread.getAABB(stackIndex: Int = -1): AABB? {
 	push(1)
 	loadTableValue(abs)
 
-	val x = getDouble(abs + 1)
+	val x = getDouble()
 	pop()
 	x ?: return null
 
 	push(2)
 	loadTableValue(abs)
 
-	val y = getDouble(abs + 1)
+	val y = getDouble()
 	pop()
 	y ?: return null
 
 	push(3)
 	loadTableValue(abs)
 
-	val z = getDouble(abs + 1)
+	val z = getDouble()
 	pop()
 	z ?: return null
 
 	push(4)
 	loadTableValue(abs)
 
-	val w = getDouble(abs + 1)
+	val w = getDouble()
 	pop()
 	w ?: return null
 
@@ -343,10 +343,10 @@ fun LuaThread.getAABB(stackIndex: Int = -1): AABB? {
 
 fun LuaThread.ArgStack.nextAABB(position: Int = this.position++): AABB {
 	if (position !in 1 ..this.top)
-		throw IllegalArgumentException("bad argument #$position: RGBAColor expected, got nil")
+		throw IllegalArgumentException("bad argument #$position: AABB expected, got nil")
 
 	return lua.getAABB(position)
-		?: throw IllegalArgumentException("bad argument #$position: RGBAColor expected, got ${lua.typeAt(position)}")
+		?: throw IllegalArgumentException("bad argument #$position: AABB expected, got ${lua.typeAt(position)}")
 }
 
 fun LuaThread.ArgStack.nextOptionalAABB(position: Int = this.position++): AABB? {
@@ -365,28 +365,28 @@ fun LuaThread.getAABBi(stackIndex: Int = -1): AABBi? {
 	push(1)
 	loadTableValue(abs)
 
-	val x = getLong(abs + 1)
+	val x = getLong()
 	pop()
 	x ?: return null
 
 	push(2)
 	loadTableValue(abs)
 
-	val y = getLong(abs + 1)
+	val y = getLong()
 	pop()
 	y ?: return null
 
 	push(3)
 	loadTableValue(abs)
 
-	val z = getLong(abs + 1)
+	val z = getLong()
 	pop()
 	z ?: return null
 
 	push(4)
 	loadTableValue(abs)
 
-	val w = getLong(abs + 1)
+	val w = getLong()
 	pop()
 	w ?: return null
 
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/lua/LuaSharedState.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/lua/LuaSharedState.kt
index e2993cf4..2426a75a 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/lua/LuaSharedState.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/lua/LuaSharedState.kt
@@ -5,11 +5,12 @@ import ru.dbotthepony.kstarbound.lua.userdata.LuaFuture
 import ru.dbotthepony.kstarbound.lua.userdata.LuaPathFinder
 import ru.dbotthepony.kstarbound.util.random.random
 import java.io.Closeable
+import java.lang.ref.Cleaner.Cleanable
 import java.util.concurrent.ConcurrentLinkedQueue
 import java.util.random.RandomGenerator
 import kotlin.properties.Delegates
 
-class LuaSharedState(val handlesThread: LuaThread) : Closeable {
+class LuaSharedState(val handlesThread: LuaThread, private val cleanable: Cleanable) : Closeable {
 	private val pendingFree = ConcurrentLinkedQueue<Int>()
 	private val freeHandles = IntAVLTreeSet()
 	private var nextHandle = 0
@@ -25,10 +26,15 @@ class LuaSharedState(val handlesThread: LuaThread) : Closeable {
 	var isValid = true
 		private set
 
+	fun ensureValid() {
+		check(isValid) { "Tried to use NULL LuaState!" }
+	}
+
 	override fun close() {
 		if (!isValid) return
 		isValid = false
 		namedHandles.clear()
+		cleanable.clean()
 	}
 
 	fun initializeHandles(mainThread: LuaThread) {
@@ -51,7 +57,7 @@ class LuaSharedState(val handlesThread: LuaThread) : Closeable {
 	}
 
 	fun cleanup() {
-		check(isValid) { "Shared state is no longer valid" }
+		ensureValid()
 		if (handlesInUse == 0) return
 		var handle = pendingFree.poll()
 
@@ -67,7 +73,7 @@ class LuaSharedState(val handlesThread: LuaThread) : Closeable {
 	}
 
 	fun allocateHandle(name: Any?): LuaHandle {
-		check(isValid) { "Shared state is no longer valid" }
+		ensureValid()
 		require(name == null || name !in namedHandles) { "Named handle '$name' already exists" }
 		handlesInUse++
 
@@ -93,12 +99,12 @@ class LuaSharedState(val handlesThread: LuaThread) : Closeable {
 	}
 
 	fun getNamedHandle(key: Any): LuaHandle {
-		check(isValid) { "Shared state is no longer valid" }
+		ensureValid()
 		return namedHandles[key] ?: throw NoSuchElementException("No such handle: $key")
 	}
 
 	fun findNamedHandle(key: Any): LuaHandle? {
-		check(isValid) { "Shared state is no longer valid" }
+		ensureValid()
 		return namedHandles[key]
 	}
 }
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/lua/LuaThread.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/lua/LuaThread.kt
index 3342dc68..49d07818 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/lua/LuaThread.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/lua/LuaThread.kt
@@ -56,18 +56,18 @@ class LuaThread private constructor(
 			CallContext.getCallContext(Type.SINT, arrayOf(Type.POINTER), CallingConvention.DEFAULT, false)
 		)
 
-		this.cleanable = Cleaner.Cleanable {
-			LuaJNR.INSTANCE.lua_close(pointer)
-			panic.dispose()
-		}
-
 		panic.setAutoRelease(false)
 		LuaJNR.INSTANCE.lua_atpanic(pointer, panic.address)
 
 		val handles = LuaJNR.INSTANCE.lua_newthread(pointer)
-		storeRef(LUA_REGISTRYINDEX)
+		LuaJNR.INSTANCE.luaL_ref(pointer, LUA_REGISTRYINDEX)
 		val handlesThread = LuaThread(handles, stringInterner)
-		sharedState = LuaSharedState(handlesThread)
+
+		sharedState = LuaSharedState(handlesThread, {
+			LuaJNR.INSTANCE.lua_close(pointer)
+			panic.dispose()
+		})
+
 		sharedState.handlesThread.sharedState = sharedState
 
 		push("__nils")
@@ -140,13 +140,11 @@ class LuaThread private constructor(
 	}
 
 	override fun close() {
-		if (cleanable != null) {
-			cleanable!!.clean()
-			sharedState.close()
-		}
+		sharedState.close()
 	}
 
 	val stackTop: Int get() {
+		sharedState.ensureValid()
 		val value = LuaJNR.INSTANCE.lua_gettop(this.pointer)
 		check(value >= 0) { "Invalid stack top $value" }
 		return value
@@ -156,6 +154,7 @@ class LuaThread private constructor(
 	 * Converts the acceptable index idx into an equivalent absolute index (that is, one that does not depend on the stack size).
 	 */
 	fun absStackIndex(index: Int): Int {
+		sharedState.ensureValid()
 		if (index >= 0)
 			return index
 
@@ -173,6 +172,7 @@ class LuaThread private constructor(
 	}
 
 	fun load(code: String, chunkName: String = "@main chunk") {
+		sharedState.ensureValid()
 		val bytes = code.toByteArray(charset = Charsets.UTF_8)
 		val buf = ByteBuffer.allocateDirect(bytes.size)
 		buf.order(ByteOrder.nativeOrder())
@@ -319,6 +319,7 @@ class LuaThread private constructor(
 	private var initCalled = false
 
 	fun initScripts(callInit: Boolean = true): Boolean {
+		sharedState.ensureValid()
 		check(!initCalled) { "Already initialized scripts!" }
 		initCalled = true
 
@@ -362,10 +363,12 @@ class LuaThread private constructor(
 	}
 
 	fun attach(script: AssetPath) {
+		sharedState.ensureValid()
 		attach(script.fullPath)
 	}
 
 	fun attach(script: String) {
+		sharedState.ensureValid()
 		if (initCalled) {
 			// minor hiccups during unpopulated script cache should be tolerable
 			load(Starbound.readLuaScript(script).join(), "@$script")
@@ -392,6 +395,7 @@ class LuaThread private constructor(
 	}
 
 	private fun getStringRaw(stackIndex: Int = -1, limit: Long = DEFAULT_STRING_LIMIT): String? {
+		sharedState.ensureValid()
 		require(limit <= Int.MAX_VALUE) { "Can't allocate string bigger than ${Int.MAX_VALUE} characters" }
 		val stack = MemoryStack.stackPush()
 		val status = stack.mallocLong(1)
@@ -410,19 +414,19 @@ class LuaThread private constructor(
 		return readBytes.toString(charset = Charsets.UTF_8)
 	}
 
-	fun isCFunction(stackIndex: Int = -1): Boolean = LuaJNR.INSTANCE.lua_iscfunction(this.pointer, this.absStackIndex(stackIndex)) > 0
-	fun isFunction(stackIndex: Int = -1): Boolean = this.typeAt(stackIndex) == LuaType.FUNCTION
-	fun isInteger(stackIndex: Int = -1): Boolean = LuaJNR.INSTANCE.lua_isinteger(this.pointer, this.absStackIndex(stackIndex)) > 0
-	fun isLightUserdata(stackIndex: Int = -1): Boolean = this.typeAt(stackIndex) == LuaType.LIGHTUSERDATA
-	fun isNil(stackIndex: Int = -1): Boolean = this.typeAt(stackIndex) == LuaType.NIL
-	fun isNone(stackIndex: Int = -1): Boolean = this.typeAt(stackIndex) == LuaType.NONE
-	fun isNoneOrNil(stackIndex: Int = -1): Boolean = this.typeAt(stackIndex).let { it == LuaType.NIL || it == LuaType.NONE }
-	fun isNumber(stackIndex: Int = -1): Boolean = LuaJNR.INSTANCE.lua_isnumber(this.pointer, this.absStackIndex(stackIndex)) > 0
-	fun isString(stackIndex: Int = -1): Boolean = LuaJNR.INSTANCE.lua_isstring(this.pointer, this.absStackIndex(stackIndex)) > 0
-	fun isTable(stackIndex: Int = -1): Boolean = this.typeAt(stackIndex) == LuaType.TABLE
-	fun isThread(stackIndex: Int = -1): Boolean = this.typeAt(stackIndex) == LuaType.THREAD
-	fun isUserdata(stackIndex: Int = -1): Boolean = LuaJNR.INSTANCE.lua_isuserdata(this.pointer, this.absStackIndex(stackIndex)) > 0
-	fun isBoolean(stackIndex: Int = -1): Boolean = this.typeAt(stackIndex) == LuaType.BOOLEAN
+	fun isCFunction(stackIndex: Int = -1): Boolean { sharedState.ensureValid(); return LuaJNR.INSTANCE.lua_iscfunction(this.pointer, this.absStackIndex(stackIndex)) > 0 }
+	fun isFunction(stackIndex: Int = -1): Boolean { sharedState.ensureValid(); return this.typeAt(stackIndex) == LuaType.FUNCTION }
+	fun isInteger(stackIndex: Int = -1): Boolean { sharedState.ensureValid(); return LuaJNR.INSTANCE.lua_isinteger(this.pointer, this.absStackIndex(stackIndex)) > 0 }
+	fun isLightUserdata(stackIndex: Int = -1): Boolean { sharedState.ensureValid(); return this.typeAt(stackIndex) == LuaType.LIGHTUSERDATA }
+	fun isNil(stackIndex: Int = -1): Boolean { sharedState.ensureValid(); return this.typeAt(stackIndex) == LuaType.NIL }
+	fun isNone(stackIndex: Int = -1): Boolean { sharedState.ensureValid(); return this.typeAt(stackIndex) == LuaType.NONE }
+	fun isNoneOrNil(stackIndex: Int = -1): Boolean { sharedState.ensureValid(); return this.typeAt(stackIndex).let { it == LuaType.NIL || it == LuaType.NONE } }
+	fun isNumber(stackIndex: Int = -1): Boolean { sharedState.ensureValid(); return LuaJNR.INSTANCE.lua_isnumber(this.pointer, this.absStackIndex(stackIndex)) > 0 }
+	fun isString(stackIndex: Int = -1): Boolean { sharedState.ensureValid(); return LuaJNR.INSTANCE.lua_isstring(this.pointer, this.absStackIndex(stackIndex)) > 0 }
+	fun isTable(stackIndex: Int = -1): Boolean { sharedState.ensureValid(); return this.typeAt(stackIndex) == LuaType.TABLE }
+	fun isThread(stackIndex: Int = -1): Boolean { sharedState.ensureValid(); return this.typeAt(stackIndex) == LuaType.THREAD }
+	fun isUserdata(stackIndex: Int = -1): Boolean { sharedState.ensureValid(); return LuaJNR.INSTANCE.lua_isuserdata(this.pointer, this.absStackIndex(stackIndex)) > 0 }
+	fun isBoolean(stackIndex: Int = -1): Boolean { sharedState.ensureValid(); return this.typeAt(stackIndex) == LuaType.BOOLEAN }
 
 	fun getBoolean(stackIndex: Int = -1): Boolean? {
 		if (!this.isBoolean(stackIndex))
@@ -514,6 +518,7 @@ class LuaThread private constructor(
 	}
 
 	fun typeAt(stackIndex: Int = -1): LuaType {
+		sharedState.ensureValid()
 		return LuaType.valueOf(LuaJNR.INSTANCE.lua_type(this.pointer, stackIndex))
 	}
 
@@ -597,7 +602,7 @@ class LuaThread private constructor(
 				push()
 				val top = this.stackTop
 
-				while (LuaJNR.INSTANCE.lua_next(this.pointer, top - 1) != 0) {
+				while (LuaJNR.INSTANCE.lua_next(this.pointer, abs) != 0) {
 					val key = this.getJson(top, limit = limit)
 					val value = this.getJson(top + 1, limit = limit)
 
@@ -690,6 +695,7 @@ class LuaThread private constructor(
 	}
 
 	fun getObject(stackIndex: Int = -1): Any? {
+		sharedState.ensureValid()
 		return LuaJNI.lua_tojobject(pointer.address(), stackIndex)
 	}
 
@@ -785,6 +791,7 @@ class LuaThread private constructor(
 	}
 
 	fun loadTableValue(stackIndex: Int = -2): LuaType {
+		sharedState.ensureValid()
 		return LuaType.valueOf(LuaJNR.INSTANCE.lua_gettable(this.pointer, stackIndex))
 	}
 
@@ -850,16 +857,19 @@ class LuaThread private constructor(
 	}
 
 	fun pop(amount: Int = 1) {
+		sharedState.ensureValid()
 		require(amount >= 0) { "Invalid amount of values to pop: $amount" }
 		if (amount == 0) return
 		LuaJNR.INSTANCE.lua_settop(this.pointer, -amount - 1)
 	}
 
 	fun storeGlobal(name: String) {
+		sharedState.ensureValid()
 		LuaJNR.INSTANCE.lua_setglobal(this.pointer, name)
 	}
 
 	fun loadGlobal(name: String): LuaType {
+		sharedState.ensureValid()
 		return LuaType.valueOf(LuaJNR.INSTANCE.lua_getglobal(this.pointer, name))
 	}
 
@@ -1163,6 +1173,7 @@ class LuaThread private constructor(
 	}
 
 	fun push(function: Fn, performanceCritical: Boolean) {
+		sharedState.ensureValid()
 		LuaJNI.lua_pushcclosure(pointer.address()) {
 			closure(it, function, performanceCritical)
 		}
@@ -1213,6 +1224,7 @@ class LuaThread private constructor(
 	}
 
 	fun ensureExtraCapacity(maxSize: Int): Boolean {
+		sharedState.ensureValid()
 		return LuaJNR.INSTANCE.lua_checkstack(pointer, maxSize)
 	}
 
@@ -1227,18 +1239,22 @@ class LuaThread private constructor(
 	}
 
 	fun moveStackValuesOnto(other: LuaThread, amount: Int = 1) {
+		sharedState.ensureValid()
 		LuaJNR.INSTANCE.lua_xmove(pointer, other.pointer, amount)
 	}
 
 	fun push() {
+		sharedState.ensureValid()
 		LuaJNR.INSTANCE.lua_pushnil(this.pointer)
 	}
 
 	fun push(value: Long) {
+		sharedState.ensureValid()
 		LuaJNR.INSTANCE.lua_pushinteger(this.pointer, value)
 	}
 
 	fun push(value: Long?) {
+		sharedState.ensureValid()
 		if (value == null) {
 			LuaJNR.INSTANCE.lua_pushnil(pointer)
 		} else {
@@ -1247,18 +1263,22 @@ class LuaThread private constructor(
 	}
 
 	fun push(value: Double) {
+		sharedState.ensureValid()
 		LuaJNR.INSTANCE.lua_pushnumber(this.pointer, value)
 	}
 
 	fun push(value: Float) {
+		sharedState.ensureValid()
 		LuaJNR.INSTANCE.lua_pushnumber(this.pointer, value.toDouble())
 	}
 
 	fun push(value: Boolean) {
+		sharedState.ensureValid()
 		LuaJNR.INSTANCE.lua_pushboolean(this.pointer, if (value) 1 else 0)
 	}
 
 	fun push(value: Double?) {
+		sharedState.ensureValid()
 		if (value == null) {
 			LuaJNR.INSTANCE.lua_pushnil(pointer)
 		} else {
@@ -1267,6 +1287,7 @@ class LuaThread private constructor(
 	}
 
 	fun push(value: Float?) {
+		sharedState.ensureValid()
 		if (value == null) {
 			LuaJNR.INSTANCE.lua_pushnil(pointer)
 		} else {
@@ -1275,6 +1296,7 @@ class LuaThread private constructor(
 	}
 
 	fun push(value: Boolean?) {
+		sharedState.ensureValid()
 		if (value == null) {
 			LuaJNR.INSTANCE.lua_pushnil(pointer)
 		} else {
@@ -1283,6 +1305,7 @@ class LuaThread private constructor(
 	}
 
 	fun push(value: String?) {
+		sharedState.ensureValid()
 		if (value == null) {
 			push()
 		} else {
@@ -1291,10 +1314,12 @@ class LuaThread private constructor(
 	}
 
 	fun push(value: LuaHandle) {
+		sharedState.ensureValid()
 		value.push(this)
 	}
 
 	fun pushObject(value: Any) {
+		sharedState.ensureValid()
 		LuaJNI.lua_pushjobject(pointer.address(), value)
 	}
 
@@ -1334,6 +1359,7 @@ class LuaThread private constructor(
 	}
 
 	fun copy(fromIndex: Int, toIndex: Int) {
+		sharedState.ensureValid()
 		LuaJNR.INSTANCE.lua_copy(pointer, fromIndex, toIndex)
 	}
 
@@ -1352,18 +1378,22 @@ class LuaThread private constructor(
 	}
 
 	fun setTop(topIndex: Int) {
+		sharedState.ensureValid()
 		LuaJNR.INSTANCE.lua_settop(pointer, topIndex)
 	}
 
 	fun storeRef(tableIndex: Int) {
+		sharedState.ensureValid()
 		LuaJNR.INSTANCE.luaL_ref(pointer, tableIndex)
 	}
 
 	fun pushTable(arraySize: Int = 0, hashSize: Int = 0) {
+		sharedState.ensureValid()
 		LuaJNR.INSTANCE.lua_createtable(pointer, arraySize, hashSize)
 	}
 
 	fun setTableValue(stackIndex: Int = -3) {
+		sharedState.ensureValid()
 		LuaJNR.INSTANCE.lua_settable(this.pointer, stackIndex)
 	}
 
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/LegacyWorldStorage.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/LegacyWorldStorage.kt
index 9ca33bfa..1dd32b56 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/LegacyWorldStorage.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/LegacyWorldStorage.kt
@@ -225,6 +225,26 @@ sealed class LegacyWorldStorage() : WorldStorage() {
 	}
 
 	override fun saveEntities(pos: ChunkPos, entities: Collection<AbstractEntity>) {
+		// since entities access their Lua state on save, we must collect everything before "unloading" them from memory
+		val uniques = HashMap<String, Vector2d>()
+		val entityData = ArrayList<FastByteArrayOutputStream>()
+
+		for (entity in entities) {
+			Starbound.legacyStoreJson {
+				val stream = FastByteArrayOutputStream()
+				val data = JsonObject()
+				entity.serialize(data)
+				VersionRegistry.make(entity.type.storeName, data).write(DataOutputStream(stream))
+				entityData.add(stream)
+			}
+
+			val uniqueID = entity.uniqueID.get()
+
+			if (uniqueID != null) {
+				uniques[uniqueID] = entity.position
+			}
+		}
+
 		scope.launch {
 			val chunkX = pos.x
 			val chunkY = pos.y
@@ -236,23 +256,11 @@ sealed class LegacyWorldStorage() : WorldStorage() {
 			val streamEntities = DataOutputStream(BufferedOutputStream(DeflaterOutputStream(buffEntities)))
 			val streamUniques = DataOutputStream(BufferedOutputStream(DeflaterOutputStream(buffUniques)))
 
-			val uniques = HashMap<String, Vector2d>()
-
 			try {
-				streamEntities.writeVarInt(entities.size)
+				streamEntities.writeVarInt(entityData.size)
 
-				for (entity in entities) {
-					Starbound.legacyStoreJson {
-						val data = JsonObject()
-						entity.serialize(data)
-						VersionRegistry.make(entity.type.storeName, data).write(streamEntities)
-					}
-
-					val uniqueID = entity.uniqueID.get()
-
-					if (uniqueID != null) {
-						uniques[uniqueID] = entity.position
-					}
+				for (data in entityData) {
+					streamEntities.write(data.array, 0, data.length)
 				}
 
 				streamEntities.close()
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/NativeLocalWorldStorage.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/NativeLocalWorldStorage.kt
index bbab3612..919bb820 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/NativeLocalWorldStorage.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/NativeLocalWorldStorage.kt
@@ -264,31 +264,37 @@ class NativeLocalWorldStorage(file: File?) : WorldStorage() {
 	""".trimIndent())
 
 	override fun saveEntities(pos: ChunkPos, entities: Collection<AbstractEntity>) {
+		// since entities access their Lua state on save, we must collect everything before "unloading" them from memory
+		val storeData = JsonArray()
+		val uniques = ArrayList<Runnable>()
+
+		for (entity in entities) {
+			Starbound.storeJson {
+				val data = JsonObject()
+				entity.serialize(data)
+				storeData.add(VersionRegistry.make(entity.type.storeName, data).toJson())
+
+				if (entity.uniqueID.get() != null) {
+					uniques.add {
+						writeUniqueEntity.setString(1, entity.uniqueID.get())
+						writeUniqueEntity.setInt(2, pos.x)
+						writeUniqueEntity.setInt(3, pos.y)
+						writeUniqueEntity.setDouble(4, entity.position.x)
+						writeUniqueEntity.setDouble(5, entity.position.y)
+
+						writeUniqueEntity.execute()
+					}
+				}
+			}
+		}
+
 		executor.execute {
 			entitiesSavepoint.execute {
 				clearUniqueEntities.setInt(1, pos.x)
 				clearUniqueEntities.setInt(2, pos.y)
 				clearUniqueEntities.execute()
 
-				val storeData = JsonArray()
-
-				for (entity in entities) {
-					Starbound.storeJson {
-						val data = JsonObject()
-						entity.serialize(data)
-						storeData.add(VersionRegistry.make(entity.type.storeName, data).toJson())
-
-						if (entity.uniqueID.get() != null) {
-							writeUniqueEntity.setString(1, entity.uniqueID.get())
-							writeUniqueEntity.setInt(2, pos.x)
-							writeUniqueEntity.setInt(3, pos.y)
-							writeUniqueEntity.setDouble(4, entity.position.x)
-							writeUniqueEntity.setDouble(5, entity.position.y)
-
-							writeUniqueEntity.execute()
-						}
-					}
-				}
+				uniques.forEach { it.run() }
 
 				writeEntities.setInt(1, pos.x)
 				writeEntities.setInt(2, pos.y)
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/ServerChunk.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/ServerChunk.kt
index b066c59e..1ebad4d8 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/ServerChunk.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/ServerChunk.kt
@@ -231,7 +231,11 @@ class ServerChunk(world: ServerWorld, pos: ChunkPos) : Chunk<ServerWorld, Server
 				// bumpState(State.CAVE_LIQUID)
 
 				for (obj in world.storage.loadEntities(pos).await()) {
-					obj.joinWorld(world)
+					try {
+						obj.joinWorld(world)
+					} catch (err: Exception) {
+						LOGGER.error("Exception while spawning entity $obj in world", err)
+					}
 				}
 
 				bumpState(state)
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/ServerWorld.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/ServerWorld.kt
index ed54423b..26b5b2b7 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/ServerWorld.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/ServerWorld.kt
@@ -215,14 +215,13 @@ class ServerWorld private constructor(
 					it.client.enqueueWarp(WarpAlias.Return)
 			}
 
-			callUninitOnEntities()
-
 			if (!uncleanShutdown) {
 				saveMetadata()
 				storage.commit()
 			}
 
 			storage.close()
+			callUninitOnEntities()
 		}
 	}
 
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/AbstractEntity.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/AbstractEntity.kt
index b6ef8c10..2d705ceb 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/AbstractEntity.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/AbstractEntity.kt
@@ -253,15 +253,50 @@ abstract class AbstractEntity : Comparable<AbstractEntity> {
 		check(!world.entities.containsKey(entityID)) { "Duplicate entity ID: $entityID" }
 		innerWorld = world
 
-		uniqueID.get()?.let {
-			check(it !in world.uniqueEntities) { "Duplicate unique entity ID: $it" }
-			world.uniqueEntities[it] = this
+		try {
+			uniqueID.get()?.let {
+				check(it !in world.uniqueEntities) { "Duplicate unique entity ID: $it" }
+				world.uniqueEntities[it] = this
+			}
+		} catch (err: Throwable) {
+			if (world is ClientWorld) {
+				world.client.activeConnection?.freeEntityID(entityID)
+			}
+
+			innerWorld = null
+			throw err
 		}
 
 		world.entities[entityID] = this
 		world.entityList.add(this)
 		spatialEntry = world.entityIndex.Entry(this)
-		onJoinWorld(world)
+
+		try {
+			onJoinWorld(world)
+		} catch (err: Throwable) {
+			try {
+				uninit(world)
+			} catch (err2: Exception) {
+				// should be harmless
+				err.addSuppressed(err2)
+			}
+
+			world.entities.remove(entityID)
+			world.entityList.remove(this)
+			spatialEntry!!.remove()
+			spatialEntry = null
+
+			uniqueID.get()?.let {
+				world.uniqueEntities.remove(it)
+			}
+
+			if (world is ClientWorld) {
+				world.client.activeConnection?.freeEntityID(entityID)
+			}
+
+			innerWorld = null
+			throw err
+		}
 
 		if (visibleToRemotes) {
 			if (world is ClientWorld && !isRemote) {
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/MonsterEntity.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/MonsterEntity.kt
index 88f6293e..d8770a6b 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/MonsterEntity.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/MonsterEntity.kt
@@ -8,6 +8,7 @@ import com.google.gson.JsonElement
 import com.google.gson.JsonNull
 import com.google.gson.JsonObject
 import it.unimi.dsi.fastutil.objects.ObjectArraySet
+import org.apache.logging.log4j.LogManager
 import ru.dbotthepony.kommons.gson.get
 import ru.dbotthepony.kommons.gson.set
 import ru.dbotthepony.kommons.util.Either
@@ -404,9 +405,13 @@ class MonsterEntity(val variant: MonsterVariant, level: Double? = null) : ActorE
 					return
 				}
 			} else {
-				luaUpdate.update(delta) {
-					luaMovement.clearControlsIfNeeded()
-					forceRegions.clear()
+				try {
+					luaUpdate.update(delta) {
+						luaMovement.clearControlsIfNeeded()
+						forceRegions.clear()
+					}
+				} catch (err: Exception) {
+					LOGGER.error("Exception while ticking $this", err)
 				}
 
 				if (shouldDie) {
@@ -429,4 +434,8 @@ class MonsterEntity(val variant: MonsterVariant, level: Double? = null) : ActorE
 	override fun handleMessage(connection: Int, message: String, arguments: JsonArray): JsonElement? {
 		return luaMessages.handle(message, connection == connectionID, arguments) ?: statusController.handleMessage(message, connection == connectionID, arguments)
 	}
+
+	companion object {
+		private val LOGGER = LogManager.getLogger()
+	}
 }
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/StatusController.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/StatusController.kt
index ceb9b845..a667c522 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/StatusController.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/StatusController.kt
@@ -151,6 +151,12 @@ class StatusController(val entity: ActorEntity, val config: StatusControllerConf
 			// provideStatusControllerBindings(this, lua) // provided through provideEntityBindings
 			provideEntityBindings(entity, lua)
 
+			if (animator != null)
+				// FIXME: effect animator's animator is not set in stone because of legacy protocol
+				//  god damn it
+				//  But at least it shouldn't change in this context
+				provideAnimatorBindings(animator.animator, lua)
+
 			// TODO: Once we have brand new object-oriented Lua API, expose proper entity bindings here
 			// TODO: Expose world bindings
 			lua.initScripts()
@@ -261,13 +267,6 @@ class StatusController(val entity: ActorEntity, val config: StatusControllerConf
 		} else {
 			animator = EffectAnimator(KOptional(config.primaryAnimationConfig.fullPath))
 			animatorID = effectAnimators.add(animator)
-
-			// FIXME: effect animator's animator is not set in stone because of legacy protocol
-			//  god damn it
-			//  But at least it shouldn't change in this context
-			if (!entity.isRemote) {
-				provideAnimatorBindings(animator.animator, lua)
-			}
 		}
 	}
 
diff --git a/src/main/resources/scripts/behavior.lua b/src/main/resources/scripts/behavior.lua
index 38b7376a..2ae2c9f6 100644
--- a/src/main/resources/scripts/behavior.lua
+++ b/src/main/resources/scripts/behavior.lua
@@ -411,7 +411,7 @@ function seqNode:run(delta, blackboard)
 	self.calls = self.calls + 1
 	local size = self.size
 	local isSelector = self.isSelector
-`
+
 	while self.index <= size do
 		local child = self.children[self.index]
 		local status = runAndReset(child, delta, blackboard)
diff --git a/src/main/resources/scripts/global.lua b/src/main/resources/scripts/global.lua
index b29d4897..a7a2be90 100644
--- a/src/main/resources/scripts/global.lua
+++ b/src/main/resources/scripts/global.lua
@@ -200,13 +200,13 @@ do
 			error('require: script path must be absolute: ' .. path)
 		end
 
-		if loadedScripts[path] then return unpack(loadedScripts[path]) end
+		if loadedScripts[path] then return table.unpack(loadedScripts[path]) end
 		local fn = __require(path)
 
 		if fn then
 			local result = {fn(...)}
 			loadedScripts[path] = result
-			return unpack(result)
+			return table.unpack(result)
 		else
 			print('Failed to require Lua script ' .. path)
 			loadedScripts[path] = {}
@@ -235,7 +235,7 @@ do
 				end
 
 				low = 1
-				high = tA
+				high = a
 
 				if high % 1.0 ~= 0.0 then
 					error('bad argument #1 to math.random: integer expected, got double', 2)
@@ -249,8 +249,8 @@ do
 					error('bad argument #2 to math.random: number expected, got ' .. tB, 2)
 				end
 
-				low = tA
-				high = tB
+				low = a
+				high = b
 
 				if low % 1.0 ~= 0.0 then
 					error('bad argument #1 to math.random: integer expected, got double', 2)
@@ -385,20 +385,4 @@ function mergeJson(base, with)
 	end
 end
 
-string.__index = string
-
-do
-	local sub = string.sub
-
-	function string:__index(key)
-		if type(key) == 'number' then
-			return sub(self, key, key)
-		else
-			return string[key]
-		end
-	end
-end
-
-setmetatable('', string)
-
 
diff --git a/src/main/resources/scripts/world.lua b/src/main/resources/scripts/world.lua
index 679330a0..ebf25d2c 100644
--- a/src/main/resources/scripts/world.lua
+++ b/src/main/resources/scripts/world.lua
@@ -175,7 +175,7 @@ for fnName, implName in pairs(regularQueryFunctions) do
 					options.callScript,
 					options.callScriptArgs or {},
 					options.callScriptResult,
-					order(options.order, fullName),
+					order(options.order, fullName)
 				)
 			else
 				-- point + radius
@@ -190,7 +190,7 @@ for fnName, implName in pairs(regularQueryFunctions) do
 					options.callScript,
 					options.callScriptArgs or {},
 					options.callScriptResult,
-					order(options.order, fullName),
+					order(options.order, fullName)
 				)
 			end
 		end
@@ -218,7 +218,7 @@ for fnName, implName in pairs(regularQueryFunctions) do
 				options.callScript,
 				options.callScriptArgs or {},
 				options.callScriptResult,
-				order(options.order, fullName),
+				order(options.order, fullName)
 			)
 		end
 	end
@@ -244,7 +244,7 @@ for fnName, implName in pairs(regularQueryFunctions) do
 				options.callScript,
 				options.callScriptArgs or {},
 				options.callScriptResult,
-				order(options.order, fullName),
+				order(options.order, fullName)
 			)
 		end
 	end
@@ -284,7 +284,7 @@ do
 					options.callScript,
 					options.callScriptArgs or {},
 					options.callScriptResult,
-					order(options.order, fullName),
+					order(options.order, fullName)
 				)
 			else
 				-- point + radius
@@ -300,7 +300,7 @@ do
 					options.callScript,
 					options.callScriptArgs or {},
 					options.callScriptResult,
-					order(options.order, fullName),
+					order(options.order, fullName)
 				)
 			end
 		end
@@ -333,7 +333,7 @@ do
 				options.callScript,
 				options.callScriptArgs or {},
 				options.callScriptResult,
-				order(options.order, fullName),
+				order(options.order, fullName)
 			)
 		end
 	end
@@ -364,7 +364,7 @@ do
 				options.callScript,
 				options.callScriptArgs or {},
 				options.callScriptResult,
-				order(options.order, fullName),
+				order(options.order, fullName)
 			)
 		end
 	end
@@ -423,7 +423,7 @@ do
 					options.callScript,
 					options.callScriptArgs or {},
 					options.callScriptResult,
-					order(options.order, fullName),
+					order(options.order, fullName)
 				)
 			else
 				-- point + radius
@@ -439,7 +439,7 @@ do
 					options.callScript,
 					options.callScriptArgs or {},
 					options.callScriptResult,
-					order(options.order, fullName),
+					order(options.order, fullName)
 				)
 			end
 		end
@@ -468,7 +468,7 @@ do
 				options.callScript,
 				options.callScriptArgs or {},
 				options.callScriptResult,
-				order(options.order, fullName),
+				order(options.order, fullName)
 			)
 		end
 	end
@@ -495,7 +495,7 @@ do
 				options.callScript,
 				options.callScriptArgs or {},
 				options.callScriptResult,
-				order(options.order, fullName),
+				order(options.order, fullName)
 			)
 		end
 	end