I am new to GWT and have been experiencing a error when running the DMP in 
FireFox and IE. I have been able to establish the error occurs when 
attempting to add new properties to JSNI objects. For example an error is 
raised on the highlighted line below.
 
private static final native void ExampleMethod(MyObject myObject)
/*-{

$wnd.MyObject = myObject;
$wnd.MyObject.newFn= function(){};

}-*/;
 
Failed to create an instance of 'com.myProject.MyObject' via deferred 
binding 
com.google.gwt.core.client.JavaScriptException: (TypeError): Object doesn't 
support this property or method
    at 
com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:248)
    at 
com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
    at 
com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
    at 
com.google.gwt.dev.shell.ModuleSpace.invokeNativeVoid(ModuleSpace.java:289)
    at 
com.google.gwt.dev.shell.JavaScriptHost.invokeNativeVoid(JavaScriptHost.java:107)
 

Strangely this behavior is only seen when using the GWT DMP in FireFox or 
IE. When run under Chrome things are fine. 
 
Anyone know what is going on here?
 
Thanks,
Chris

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