java.lang.NullPointerException
   at java.io.FileInputStream.<init>(FileInputStream.java:103)
   at com.nanosn.netbeans.gwtxml.gwtmodule.Module.createGraph(Module.java:2282)
   at com.nanosn.netbeans.gwtxml.GwtXmlDataObject.getModule(GwtXmlDataObject.java:80)
   at com.nanosn.netbeans.gwtxml.GwtXmlDataObject.parseDocument(GwtXmlDataObject.java:60)
   at com.nanosn.netbeans.gwtxml.GwtXmlDataObject.<init>(GwtXmlDataObject.java:45)
Caused: java.lang.reflect.InvocationTargetException
   at sun.reflect.NativeConstructorAccessorImpl.newInstance0(NativeConstructorAccessorImpl.java:0)
   at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
   at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
   at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
Caused: java.io.IOException
   at org.openide.loaders.MimeFactory.findDataObject(MimeFactory.java:119)
   at org.openide.loaders.DataObjectPool.handleFindDataObject(DataObjectPool.java:178)
   at org.openide.loaders.DataLoaderPool.findDataObject(DataLoaderPool.java:533)
   at org.openide.loaders.FolderList.createBoth(FolderList.java:790)
   at org.openide.loaders.FolderList.getObjects(FolderList.java:586)
   at org.openide.loaders.FolderList.access$200(FolderList.java:74)
   at org.openide.loaders.FolderList$ListTask.computeResult(FolderList.java:985)
   at org.openide.loaders.FolderList$ListTask.run(FolderList.java:961)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:602)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1084)