Bug 175664 [Mac] Unexpected internal exception occurs when invoke expression builder
Description: There are two problems: 1. "fx" button (Click this button to invoke Expression Builder) could not be displayed correctly, nothing displayed in the button. 2. Click on the button, an unexpected internal exception occurs. Version:2.2.0.v20070205 Steps to reproduce: 1.Insert a Data item to the layout. Click "fx" button to invoke the expression builder, although on Mac "fx" button could not display correctly. Error log: Argument cannot be null Plug-in Provider: Eclipse.org Plug-in Name: BIRT Designer UI Plug-in ID: org.eclipse.birt.report.designer.ui Error Code: Error.GUIException.invokedByUnexpectedException Error Message:Argument cannot be null
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/util/UIUtil.java
*            the library to include.
	 * @return true if it included successfully, or false if the operation
	 *         failed.
	 */
	public static boolean includeLibrary( ModuleHandle moduleHandle,
			LibraryHandle libraryHandle ) throws DesignFileException,
			SemanticException
	{
		if ( moduleHandle != libraryHandle
				&& !moduleHandle.isInclude( libraryHandle ) )
		{
			return includeLibrary( moduleHandle, libraryHandle.getFileName( ) );
		}
		return true;
	}
	/**
	 * Includes the library into within the current module.
	 * 
	 * @param libraryHandle
	 *            the library to include.
	 * @return true if it included successfully, or false if the operation
	 *         failed.
	 */
	public static boolean includeLibrary( LibraryHandle libraryHandle )
			throws DesignFileException, SemanticException
	{
		return includeLibrary( SessionHandleAdapter.getInstance( )
				.getReportDesignHandle( ), libraryHandle );
	}
	/**