diff --git a/src/main/java/qowyn/ark/ArkCloudInventory.java b/src/main/java/qowyn/ark/ArkCloudInventory.java
index 29f5b84..14b74ea 100644
--- a/src/main/java/qowyn/ark/ArkCloudInventory.java
+++ b/src/main/java/qowyn/ark/ArkCloudInventory.java
@@ -61,7 +61,7 @@ public ArkCloudInventory(JsonObject object) {
   public void readBinary(ArkArchive archive) {
     inventoryVersion = archive.getInt();
 
-    if (inventoryVersion != 1) {
+    if (inventoryVersion != 1 && inventoryVersion != 3) {
       throw new UnsupportedOperationException("Unknown Cloud Inventory Version " + inventoryVersion);
     }
 
diff --git a/src/main/java/qowyn/ark/ArkContainer.java b/src/main/java/qowyn/ark/ArkContainer.java
index c770081..051c992 100644
--- a/src/main/java/qowyn/ark/ArkContainer.java
+++ b/src/main/java/qowyn/ark/ArkContainer.java
@@ -16,6 +16,7 @@
 import javax.json.JsonValue.ValueType;
 import javax.json.stream.JsonGenerator;
 
+import qowyn.ark.arrays.ArkArrayInt8;
 import qowyn.ark.arrays.ArkArrayUInt8;
 
 public class ArkContainer implements GameObjectContainer {
@@ -62,6 +63,17 @@ public ArkContainer(ArkArrayUInt8 source) {
     readBinary(archive);
   }
 
+  public ArkContainer(ArkArrayInt8 source) {
+    ByteBuffer buffer = ByteBuffer.allocateDirect(source.size());
+
+    source.forEach(buffer::put);
+
+    buffer.clear();
+
+    ArkArchive archive = new ArkArchive(buffer);
+    readBinary(archive);
+  }
+
   public ArkContainer(JsonArray jsonObjects) {
     readJson(jsonObjects);
   }
@@ -169,7 +181,7 @@ public ArrayList<GameObject> getObjects() {
     return objects;
   }
 
-  public ArkArrayUInt8 toByteArray() {
+  private ByteBuffer toBuffer() {
     int size = Integer.BYTES;
 
     size += objects.stream().mapToInt(object -> object.getSize(false)).sum();
@@ -191,11 +203,32 @@ public ArkArrayUInt8 toByteArray() {
       object.writeProperties(archive, 0);
     }
 
+    return buffer;
+    
+  }
+
+  public ArkArrayUInt8 toByteArray() {
+    ByteBuffer buffer = toBuffer();
+
     ArkArrayUInt8 result = new ArkArrayUInt8();
 
     buffer.clear();
 
-    for (int n = 0; n < size; n++) {
+    for (int n = 0; n < buffer.capacity(); n++) {
+      result.add(buffer.get());
+    }
+
+    return result;
+  }
+
+  public ArkArrayInt8 toSignedByteArray() {
+    ByteBuffer buffer = toBuffer();
+
+    ArkArrayInt8 result = new ArkArrayInt8();
+
+    buffer.clear();
+
+    for (int n = 0; n < buffer.capacity(); n++) {
       result.add(buffer.get());
     }
 
diff --git a/src/main/java/qowyn/ark/arrays/ArkArrayStruct.java b/src/main/java/qowyn/ark/arrays/ArkArrayStruct.java
index eb3200e..0af6d90 100644
--- a/src/main/java/qowyn/ark/arrays/ArkArrayStruct.java
+++ b/src/main/java/qowyn/ark/arrays/ArkArrayStruct.java
@@ -48,7 +48,7 @@ public ArkArrayStruct(ArkArchive archive, PropertyArray property) {
   }
 
   public ArkArrayStruct(JsonArray a, PropertyArray property) {
-    int size = a.size();
+    int size = property.getDataSize();
 
     ArkName structType = StructRegistry.mapArrayNameToTypeName(property.getName());
     if (structType == null) {