Bug 130091 [regression]Save button failed after edit script in data item.
Description: Save button failed after edit script in data item. Steps to reproduce: 1. New a report 2. Insert a data item and input "data". 3. Select data item and transfer to script pane, input some words. 4. Transfer back to Layout and save the report. Expected result: Save action works. Actual result: Save action failed.
UI/org.eclipse.birt.report.designer.ui.ide/src/org/eclipse/birt/report/designer/ui/editors/ReportEditorProxy.java
public void dispose( )
	{
		if ( instance != null )
		{
			instance.dispose( );
			getSite( ).getWorkbenchWindow( )
					.getPartService( )
					.removePartListener( this );
			instance.removePropertyListener( this );
		}
		instance = null;
	}
	public IWorkbenchPartSite getSite( )
	{
		return instance.getSite( );
	}
	public String getTitle( )
	{
		return this.title;
	}
	public Image getTitleImage( )
	{
		return instance.getTitleImage( );
	}
	public String getTitleToolTip( )
	{
		return instance.getTitleToolTip( );
	}
	public void setFocus( )
	{