To return null, you will get into a lot of pop up messages from Eclipse (for each image this method returns null).
Modify EditorViewerLabelProvider.getImage(Object element) method to return
WorkbenchLabelProvider.getDecoratingWorkbenchLabelProvider().getImage(element);
this worked for me.
2009-09-14 14:55:47 UTC in EditorViewer Plugin For Eclipse
