Hopefully I’m just making a silly mistake, but I’ve looked over this several times and can’t seem to come up with any solution. There was a very similar problem posted on Adobe’s forums a long while ago (http://www.adobe.com/cfusion/webforums/forum/messageview.cfm?forumid=15&catid=194&threadid=1018702&highlight_key=y&keyword1=masking%20movie%20clips),
but unfortunately it was never solved.
Basically, when I apply a mask to a movie clip, the movie clip is completely invisible. The size and position of the mask have no effect whatsoever on the situation. When I delete everything on the mask layer or just delete the mask layer itself, everything in the movie clip is visible. It’s probably easier to see than read about. The flash file can be downloaded here…
http://www.personal.psu.edu/users/n/c/ncc5012/hartleys/masking%20enigma.fla
The structure may seem a bit strange, but it is the only way to accomplish what I need in the full project. On the stage is a movie clip (mc_explosion). Inside here lies the problem. I posted more detail in the fla file…and after viewing it, hopefully the whole thing will make a bit more sense.