diff --git a/src/main/js/protobufUtils/classCreator.js b/src/main/js/protobufUtils/classCreator.js
index ede29bf..722f1d3 100644
--- a/src/main/js/protobufUtils/classCreator.js
+++ b/src/main/js/protobufUtils/classCreator.js
@@ -30,7 +30,7 @@ define([], function () {
 
         var callParent = function () {
             if (arguments.length >= 1) {
-                Parent.apply(this, Array.prototype.slice.call(arguments, 0));
+                Parent.apply(this, arguments);
             } else {
                 Parent.apply(this);
             }
@@ -48,7 +48,7 @@ define([], function () {
                 // special setting
                 this.superConstructor = parentConstructor;
                 // console.log('Setting parent constructor' + parent);
-                callParent.bind(this)(arguments);
+                callParent.bind(this).apply(this, arguments);
                 // console.log('Setting back to current constructor' +
                 // localConstructor);
                 this.superConstructor = localConstructor;
@@ -58,7 +58,7 @@ define([], function () {
              * SuperConstructor.
              */
             localScope.prototype.superConstructor = function () {
-                callParent.bind(this)(arguments);
+                callParent.bind(this).apply(this, arguments);
             };
         }
     };
diff --git a/src/main/js/protobufUtils/sketchProtoConverter.js b/src/main/js/protobufUtils/sketchProtoConverter.js
index 0d07d74..bebdfe5 100644
--- a/src/main/js/protobufUtils/sketchProtoConverter.js
+++ b/src/main/js/protobufUtils/sketchProtoConverter.js
@@ -46,7 +46,7 @@ define(['./../sketchLibrary/ProtoSketchFramework', // ProtoSketchFramework
             throw new ProtobufDecodingException('Data type is not supported:' + typeof data);
         }
 
-        if (protobufUtils.isUndefined(proto) || proto === null || typeof proto !== 'object') {
+        if (protobufUtils.isUndefined(proto) || proto === null) {
             throw new ProtobufDecodingException('Proto is not a valid object:' + typeof proto);
         }
         try {
@@ -220,7 +220,7 @@ define(['./../sketchLibrary/ProtoSketchFramework', // ProtoSketchFramework
      */
     var createNewSketch = function createNewSketch(id, x, y, width, height) {
         var command = createBaseCommand(Commands.CommandType.CREATE_SKETCH, false);
-        var idChain = sketchUtil.IdChain();
+        var idChain = new sketchUtil.IdChain();
         if (!protobufUtils.isUndefined(id)) {
             idChain.idChain = [ id ];
         } else {
diff --git a/src/main/js/sketchLibrary/SketchLibraryException.js b/src/main/js/sketchLibrary/SketchLibraryException.js
index 9b98e18..2765c19 100644
--- a/src/main/js/sketchLibrary/SketchLibraryException.js
+++ b/src/main/js/sketchLibrary/SketchLibraryException.js
@@ -12,7 +12,6 @@ define(['stacktrace-js'], function (StackTrace) {
      * @constructor
      */
     function SketchLibraryException(message, cause) {
-
         this.name = 'SketchLibraryException';
         /**
          * The level defines how bad it is. level 5 is the okayest exception
@@ -37,7 +36,7 @@ define(['stacktrace-js'], function (StackTrace) {
          *          of the the exception that occurred.
          */
         this.setMessage = function(messageValue) {
-            this.specificMessage = messageValue;
+            this.message = messageValue;
         };
 
         /**