Bug 29165 exception when deleting a class in I20030107 (win2k)
steps to reproduce the exception : - selected class in package explorer - selected delete in contextmenu
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/JavaPlugin.java
}
	/* (non - Javadoc)
	 * Method declared in Plugin
	 */
	public void shutdown() throws CoreException {
		
		if (fImageDescriptorRegistry != null)
			fImageDescriptorRegistry.dispose();
		
		unregisterAdapters();
		
		super.shutdown();
		
		if (fCompilationUnitDocumentProvider != null) {
			fCompilationUnitDocumentProvider.shutdown();
			fCompilationUnitDocumentProvider= null;
		}
				
		if (fJavaTextTools != null) {
			fJavaTextTools.dispose();
			fJavaTextTools= null;
		}
		
		JavaDocLocations.shutdownJavadocLocations();
		
		JFaceResources.getFontRegistry().removeListener(fFontPropertyChangeListener);
	}
		
	private IWorkbenchPage internalGetActivePage() {
		IWorkbenchWindow window= getWorkbench().getActiveWorkbenchWindow();