Bug 140620 Chart scripting errors are ignored
Write a chart with an invalid script, the execution simply ignores the script. This makes it difficult to debug scripting. The error message is also not precise and needs improvements.
chart/org.eclipse.birt.chart.ui.extension/src/org/eclipse/birt/chart/ui/swt/wizard/TaskSelectData.java
Composite cmpLeftContainer = ChartUIUtil.createCompositeWrapper( cmpTask );
			GridData gridData = new GridData( GridData.FILL_HORIZONTAL
					| GridData.VERTICAL_ALIGN_CENTER );
			gridData.verticalSpan = 2;
			cmpLeftContainer.setLayoutData( gridData );
			getCustomizeUI( ).createLeftBindingArea( cmpLeftContainer );
		}
		createPreviewArea( );
		{
			Composite cmpRightContainer = ChartUIUtil.createCompositeWrapper( cmpTask );
			GridData gridData = new GridData( GridData.FILL_HORIZONTAL
					| GridData.VERTICAL_ALIGN_CENTER );
			gridData.verticalSpan = 2;
			cmpRightContainer.setLayoutData( gridData );
			getCustomizeUI( ).createRightBindingArea( cmpRightContainer );
		}
		{
			Composite cmpBottomContainer = ChartUIUtil.createCompositeWrapper( cmpTask );
			GridData gridData = new GridData( GridData.FILL_HORIZONTAL
					| GridData.VERTICAL_ALIGN_BEGINNING );
			cmpBottomContainer.setLayoutData( gridData );
			getCustomizeUI( ).createBottomBindingArea( cmpBottomContainer );
		}
	}
	private void createPreviewArea( )
	{
		cmpPreview = ChartUIUtil.createCompositeWrapper( cmpTask );
		{
			GridData gridData = new GridData( GridData.FILL_BOTH );
			gridData.widthHint = CENTER_WIDTH_HINT;