diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/Starbound.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/Starbound.kt
index c22f8dfe..e4e64947 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/Starbound.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/Starbound.kt
@@ -65,6 +65,7 @@ import ru.dbotthepony.kstarbound.math.Vector3iTypeAdapter
 import ru.dbotthepony.kstarbound.math.Vector4dTypeAdapter
 import ru.dbotthepony.kstarbound.math.Vector4fTypeAdapter
 import ru.dbotthepony.kstarbound.math.Vector4iTypeAdapter
+import ru.dbotthepony.kstarbound.util.AssetPathStack
 import ru.dbotthepony.kstarbound.util.BlockableEventLoop
 import ru.dbotthepony.kstarbound.util.ExecutorWithScheduler
 import ru.dbotthepony.kstarbound.util.Directives
@@ -433,6 +434,14 @@ object Starbound : BlockableEventLoop("Universe Thread"), Scheduler, ISBFileLoca
 		return JsonPath.query(jsonPath).get(json)
 	}
 
+	fun loadJsonAsset(path: JsonElement, relative: String): JsonElement? {
+		if (path is JsonPrimitive) {
+			return loadJsonAsset(AssetPathStack.relativeTo(relative, path.asString))
+		} else {
+			return path
+		}
+	}
+
 	private val fileSystems = ArrayList<IStarboundFile>()
 	private val toLoadPaks = ObjectArraySet<File>()
 	private val toLoadPaths = ObjectArraySet<File>()
@@ -573,7 +582,7 @@ object Starbound : BlockableEventLoop("Universe Thread"), Scheduler, ISBFileLoca
 		// same assets from other PAKs
 		fileSystems.forEach {
 			it.explore { file ->
-				if (file.isFile)
+				if (file.isFile && file.name.contains('.'))
 					fileTree.computeIfAbsent(file.name.substringAfterLast('.')) { HashSet() }.add(file)
 			}
 		}
@@ -582,7 +591,7 @@ object Starbound : BlockableEventLoop("Universe Thread"), Scheduler, ISBFileLoca
 		fileSystems.asReversed().forEach {
 			it.explore { file ->
 				if (file.isFile && file.name.endsWith(".patch"))
-					patchTree.computeIfAbsent(file.computeFullPath().substringAfterLast('.')) { ArrayList() }.add(file)
+					patchTree.computeIfAbsent(file.computeFullPath().substringBeforeLast('.')) { ArrayList() }.add(file)
 			}
 		}
 
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/defs/EntityType.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/defs/EntityType.kt
index 7cf27e89..fdc6220f 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/defs/EntityType.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/defs/EntityType.kt
@@ -14,7 +14,7 @@ import ru.dbotthepony.kstarbound.world.entities.tile.PlantPieceEntity
 import ru.dbotthepony.kstarbound.world.entities.tile.WorldObject
 import java.io.DataInputStream
 
-enum class EntityType(override val jsonName: String, val storeName: String, val canBeCreatedByClient: Boolean, val canBeSpawnedByClient: Boolean) : IStringSerializable {
+enum class EntityType(override val jsonName: String, val storeName: String, val canBeCreatedByClient: Boolean, val canBeSpawnedByClient: Boolean, val ephemeralIfSpawnedByClient: Boolean = true) : IStringSerializable {
 	PLANT("plant", "PlantEntity", false, false) {
 		override fun fromNetwork(stream: DataInputStream, isLegacy: Boolean): AbstractEntity {
 			return PlantEntity(stream, isLegacy)
@@ -38,7 +38,7 @@ enum class EntityType(override val jsonName: String, val storeName: String, val
 		}
 	},
 
-	VEHICLE("vehicle", "VehicleEntity", false, true) {
+	VEHICLE("vehicle", "VehicleEntity", false, true, false) {
 		override fun fromNetwork(stream: DataInputStream, isLegacy: Boolean): AbstractEntity {
 			TODO("VEHICLE")
 		}
@@ -48,7 +48,7 @@ enum class EntityType(override val jsonName: String, val storeName: String, val
 		}
 	},
 
-	ITEM_DROP("itemDrop", "ItemDropEntity", false, true) {
+	ITEM_DROP("itemDrop", "ItemDropEntity", false, true, false) {
 		override fun fromNetwork(stream: DataInputStream, isLegacy: Boolean): AbstractEntity {
 			return ItemDropEntity(stream, isLegacy)
 		}
@@ -78,7 +78,7 @@ enum class EntityType(override val jsonName: String, val storeName: String, val
 		}
 	},
 
-	STAGEHAND("stagehand", "StagehandEntity", false, false) {
+	STAGEHAND("stagehand", "StagehandEntity", true, true) {
 		override fun fromNetwork(stream: DataInputStream, isLegacy: Boolean): AbstractEntity {
 			TODO("STAGEHAND")
 		}
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/item/ActiveItemStack.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/item/ActiveItemStack.kt
index 4770b3e2..1c2bdd2c 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/item/ActiveItemStack.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/item/ActiveItemStack.kt
@@ -32,8 +32,7 @@ class ActiveItemStack(entry: ItemRegistry.Entry, config: JsonObject, parameters:
 	val animator: Animator
 
 	init {
-		val animationPath = AssetPathStack.relativeTo(entry.directory, lookupProperty("animation").asString)
-		var animationConfig = Starbound.loadJsonAsset(animationPath) ?: JsonNull.INSTANCE
+		var animationConfig = Starbound.loadJsonAsset(lookupProperty("animation"), entry.directory) ?: JsonNull.INSTANCE
 		val animationCustom = lookupProperty("animationCustom")
 
 		if (!animationCustom.isJsonNull) {
@@ -41,13 +40,13 @@ class ActiveItemStack(entry: ItemRegistry.Entry, config: JsonObject, parameters:
 		}
 
 		try {
-			if (animationCustom.isJsonNull) {
+			if (animationConfig.isJsonNull) {
 				animator = Animator()
 			} else {
 				animator = Animator(Starbound.gson.fromJson(animationConfig, AnimationDefinition::class.java))
 			}
 		} catch (err: Throwable) {
-			throw RuntimeException("Unable to instance animator for ${entry.name} (animation config: $animationPath)", err)
+			throw RuntimeException("Unable to instance animator for ${entry.name} (animation config: ${lookupProperty("animation")})", err)
 		}
 
 		networkElement.add(animator.networkGroup)
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/item/ItemRegistry.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/item/ItemRegistry.kt
index 6f175d4a..98b6740e 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/item/ItemRegistry.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/item/ItemRegistry.kt
@@ -142,7 +142,7 @@ object ItemRegistry {
 			for (file in files) {
 				futures.add(Starbound.EXECUTOR.submit {
 					try {
-						val read = JsonPatch.apply(Starbound.ELEMENTS_ADAPTER.read(file.jsonReader()), patches[file.computeFullPath()]) as JsonObject
+						val read = JsonPatch.apply(Starbound.ELEMENTS_ADAPTER.read(file.jsonReader()), patches[file.computeFullPath()]).asJsonObject
 						val readData = data.fromJsonTree(read)
 
 						tasks.add {
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/json/JsonPatch.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/json/JsonPatch.kt
index b79f99e3..2ea8665b 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/json/JsonPatch.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/json/JsonPatch.kt
@@ -19,16 +19,26 @@ enum class JsonPatch(val key: String) {
 
 			val get = path.find(base) ?: JsonNull.INSTANCE
 
-			if (inverse && get == value) {
-				throw IllegalStateException("Expected $path to not contain $value")
-			} else if (!inverse && get != value && value != JsonNull.INSTANCE) {
-				var text = get.toString()
-
-				if (text.length > 40) {
-					text = text.substring(0, 40) + "..."
+			if (inverse) {
+				if (value == JsonNull.INSTANCE && get != JsonNull.INSTANCE) {
+					throw IllegalStateException("Expected $path to not contain anything")
+				} else if (value != JsonNull.INSTANCE && value == get) {
+					throw IllegalStateException("Expected $path to not contain $value")
 				}
+			} else {
+				if (value == JsonNull.INSTANCE && get == JsonNull.INSTANCE) {
+					throw IllegalStateException("Expected $path to contain anything")
+				} else if (value != JsonNull.INSTANCE && get == JsonNull.INSTANCE) {
+					throw IllegalStateException("Expected $path to contain '$value', but found nothing")
+				} else if (value != JsonNull.INSTANCE && get != JsonNull.INSTANCE && value != get) {
+					var text = get.toString()
 
-				throw IllegalStateException("Expected $path to contain $value, but found $text")
+					if (text.length > 40) {
+						text = text.substring(0, 40) + "..."
+					}
+
+					throw IllegalStateException("Expected $path to contain $value, but found $text")
+				}
 			}
 
 			return base
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 fab14dc7..a0f83ddb 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/LegacyWorldStorage.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/server/world/LegacyWorldStorage.kt
@@ -10,6 +10,8 @@ import ru.dbotthepony.kommons.io.readVarInt
 import ru.dbotthepony.kommons.io.writeVarInt
 import ru.dbotthepony.kommons.util.KOptional
 import ru.dbotthepony.kstarbound.Starbound
+import ru.dbotthepony.kstarbound.defs.tile.BuiltinMetaMaterials
+import ru.dbotthepony.kstarbound.defs.tile.isNullTile
 import ru.dbotthepony.kstarbound.io.BTreeDB5
 import ru.dbotthepony.kstarbound.json.VersionedJson
 import ru.dbotthepony.kstarbound.math.vector.Vector2i
@@ -72,7 +74,17 @@ sealed class LegacyWorldStorage() : WorldStorage() {
 
 				for (y in 0 until CHUNK_SIZE) {
 					for (x in 0 until CHUNK_SIZE) {
-						result[x, y] = MutableCell().readLegacy(reader, tileSerializationVersion).immutable()
+						val read = MutableCell().readLegacy(reader, tileSerializationVersion)
+
+						if (read.foreground.material == BuiltinMetaMaterials.STRUCTURE) {
+							read.foreground.material = BuiltinMetaMaterials.EMPTY
+						}
+
+						if (read.background.material == BuiltinMetaMaterials.STRUCTURE) {
+							read.background.material = BuiltinMetaMaterials.EMPTY
+						}
+
+						result[x, y] = read.immutable()
 					}
 				}
 
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/Animator.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/Animator.kt
index f85f1c6a..d91fc380 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/Animator.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/world/entities/Animator.kt
@@ -1018,5 +1018,7 @@ class Animator() {
 		private val missing = Collections.synchronizedSet(ObjectOpenHashSet<String>())
 		private val vectors by lazy { Starbound.gson.getAdapter(Vector2d::class.java) }
 		private val polies by lazy { Starbound.gson.getAdapter(Poly::class.java) }
+
+
 	}
 }
diff --git a/src/test/kotlin/ru/dbotthepony/kstarbound/test/MiscTests.kt b/src/test/kotlin/ru/dbotthepony/kstarbound/test/MiscTests.kt
index e01c0ed2..74c5fe26 100644
--- a/src/test/kotlin/ru/dbotthepony/kstarbound/test/MiscTests.kt
+++ b/src/test/kotlin/ru/dbotthepony/kstarbound/test/MiscTests.kt
@@ -1,10 +1,13 @@
 package ru.dbotthepony.kstarbound.test
 
+import com.google.gson.JsonObject
+import com.google.gson.JsonPrimitive
 import org.junit.jupiter.api.Assertions.*
 import org.junit.jupiter.api.DisplayName
 import org.junit.jupiter.api.Test
 import ru.dbotthepony.kommons.arrays.Int2DArray
 import ru.dbotthepony.kstarbound.defs.dungeon.VectorizedBitSet
+import ru.dbotthepony.kstarbound.json.JsonPath
 import ru.dbotthepony.kstarbound.util.random.random
 import java.rmi.UnexpectedException
 
@@ -35,4 +38,13 @@ object MiscTests {
 			}
 		}
 	}
+
+	@Test
+	@DisplayName("Json patch test")
+	fun jsonPatchTest() {
+		val json = JsonObject()
+
+		JsonPath.pointer("/element").add(json, JsonPrimitive(1))
+		assertEquals(json["element"], JsonPrimitive(1))
+	}
 }