Bug 210609 [Smoke]Crosstab is failed to preview in runtime
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/extension/experimental/EditpartExtensionManager.java
extensionMap.put( ExpressionConverter.getDefault( )
							.perform( enablements[0] ), elements[i] );
				}
				catch ( CoreException e )
				{
					e.printStackTrace( );
				}
				IConfigurationElement[] paletteEntries = elements[i].getChildren( "paletteEntry" );
				if ( paletteEntries.length == 1 )
				{
					PaletteEntryExtension entry = new PaletteEntryExtension( );
					entry.setItemName( paletteEntries[0].getAttribute( "itemName" ) );
					String displayName = DEUtil.getMetaDataDictionary( )
							.getExtension( entry.getItemName( ) )
							.getDisplayName( );
					
					entry.setLabel( displayName );
					entry.setMenuLabel( paletteEntries[0].getAttribute( "menuLabel" ) );
					entry.setDescription( paletteEntries[0].getAttribute( "description" ) );
					entry.setIcon( getImageDescriptor( paletteEntries[0],
							paletteEntries[0].getAttribute( "icon" ) ) );
					entry.setIconLarge( getImageDescriptor( paletteEntries[0],
							paletteEntries[0].getAttribute( "largeIcon" ) ) );
					
					entry.setCategory( paletteEntries[0].getAttribute( "category" ) );
					
					entry.setCommand( paletteEntries[0].getAttribute( "createCommand" ) );
					registerImage( entry );
					
					palettes.add( entry );