diff --git a/src/main/java/com/zhekasmirnov/innercore/api/NativeItemModel.java b/src/main/java/com/zhekasmirnov/innercore/api/NativeItemModel.java
index 257564f4..db9758dc 100644
--- a/src/main/java/com/zhekasmirnov/innercore/api/NativeItemModel.java
+++ b/src/main/java/com/zhekasmirnov/innercore/api/NativeItemModel.java
@@ -460,7 +460,7 @@ public class NativeItemModel {
     }
 
     public NativeItemModel setItemTexturePath(String path) {
-        if (!path.endsWith(".png")) {
+        if (path != null && !path.endsWith(".png")) {
             path += ".png";
         }
         mItemTexturePath = path;
diff --git a/src/main/java/com/zhekasmirnov/innercore/api/runtime/saver/world/ScriptableSaverScope.java b/src/main/java/com/zhekasmirnov/innercore/api/runtime/saver/world/ScriptableSaverScope.java
index 8b2086da..a9bc85df 100644
--- a/src/main/java/com/zhekasmirnov/innercore/api/runtime/saver/world/ScriptableSaverScope.java
+++ b/src/main/java/com/zhekasmirnov/innercore/api/runtime/saver/world/ScriptableSaverScope.java
@@ -1,6 +1,8 @@
 package com.zhekasmirnov.innercore.api.runtime.saver.world;
 
 import com.zhekasmirnov.innercore.api.runtime.saver.serializer.ScriptableSerializer;
+
+import org.apache.commons.math3.exception.NullArgumentException;
 import org.mozilla.javascript.Scriptable;
 import java.io.IOException;
 
@@ -8,7 +10,9 @@ public abstract class ScriptableSaverScope implements WorldDataScopeRegistry.Sav
     @Override
     public void readJson(Object json) throws Exception {
         Object scriptable = ScriptableSerializer.scriptableFromJson(json);
-        if (scriptable instanceof Scriptable) {
+        if (scriptable == null) {
+            throw new NullArgumentException();
+        } else if (scriptable instanceof Scriptable) {
             read((Scriptable) scriptable);
         } else {
             throw new IOException("scriptable saver scope readJson() de-serialized into non scriptable");
diff --git a/src/main/java/com/zhekasmirnov/innercore/api/runtime/saver/world/WorldDataScopeRegistry.java b/src/main/java/com/zhekasmirnov/innercore/api/runtime/saver/world/WorldDataScopeRegistry.java
index 4b54c5d6..3bf1cde5 100644
--- a/src/main/java/com/zhekasmirnov/innercore/api/runtime/saver/world/WorldDataScopeRegistry.java
+++ b/src/main/java/com/zhekasmirnov/innercore/api/runtime/saver/world/WorldDataScopeRegistry.java
@@ -2,6 +2,8 @@ package com.zhekasmirnov.innercore.api.runtime.saver.world;
 
 import com.zhekasmirnov.innercore.api.mod.ScriptableObjectHelper;
 import com.zhekasmirnov.innercore.api.runtime.Callback;
+
+import org.apache.commons.math3.exception.NullArgumentException;
 import org.json.JSONObject;
 import org.mozilla.javascript.ScriptableObject;
 
@@ -68,6 +70,8 @@ public class WorldDataScopeRegistry {
             Object data = json.opt(key);
             try {
                 entry.getValue().readJson(data);
+            } catch (NullArgumentException err) {
+                // Data does not exists in json, skipping
             } catch (Throwable err) {
                 errorHandler.handle(key, err);
             }