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.engine/src/org/eclipse/birt/chart/model/component/util/ComponentSwitch.java
Object result = caseChartPreferences( chartPreferences );
				if ( result == null )
					result = defaultCase( theEObject );
				return result;
			}
			case ComponentPackage.CURVE_FITTING :
			{
				CurveFitting curveFitting = (CurveFitting) theEObject;
				Object result = caseCurveFitting( curveFitting );
				if ( result == null )
					result = defaultCase( theEObject );
				return result;
			}
			case ComponentPackage.DIAL :
			{
				Dial dial = (Dial) theEObject;
				Object result = caseDial( dial );
				if ( result == null )
					result = defaultCase( theEObject );
				return result;
			}
			case ComponentPackage.DIAL_REGION :
			{
				DialRegion dialRegion = (DialRegion) theEObject;
				Object result = caseDialRegion( dialRegion );
				if ( result == null )
					result = caseMarkerRange( dialRegion );
				if ( result == null )
					result = defaultCase( theEObject );
				return result;