ClassCastException while loading entry-point class

All,

 

My application uses GWT 2.7.0 and com.extjs.gxt version 2.3.1a-gwt22. Compilation succeeded with warnings. Application is not loaded on the browser and got class cast exception at com.westdata.xro.xrogwt.client.XROClientController from the script.

 

Please let me know what mistake I am doing here.

 

Regards,

Narasimhulu BB 

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