Hi, I have compiled a large project with latest 4.12 RC and got a conflicting style definition for "labelPlacement".
It was defined as follows in mx.charts.LegendItem: [Style(name="labelPlacement", type="String", enumeration="top,bottom,right,left", inherit="yes")] And now also defined in spark.component.ChechBox: [Style(name="labelPlacement", type="String", enumeration="top,bottom,left,right", inherit="no", defaultValue="right")] AFAIU, a style cannot be declared both inheriting and non-inheriting. So either change the style name to something else, or make it inherit like in LegendItem. Moreover, compiler also complains that "defaultValue" does not exist in [Style] metadata, which is confirmed in official [Style] doc: http://help.adobe.com/en_US/flex/using/WS2db454920e96a9e51e63e3d11c0bf680e1-7ffe.html#WS2db454920e96a9e51e63e3d11c0bf69084-7a1a Mark, I think this is for you... Regard, Maurice