I can't believe I cannot find any help on this, no matter what combination of search terms I try. Gawd.
Anyway, simply put: I set a mask on a layer within a button in FLash MX 2004. The mask operates properly in the editing view, but when I publish.test, the mask doesn't work - that is, the mask appears as a solid shape and the layer is not masked.
If I change the object to a movie type, it will work.
Just an inherent bug or limitation in Flash? Surely wouldn't be the first one!
Figures that their tech support is the worst, too.