I have a graphic sitting on my stage that I want to convert to a movieclip so I can change it's alpha with as3. If I change it from a graphic to a movieclip my swf stops working. I have a bunch of code which constructs a dynamic menu and it stops working when the graphic is changed to a movieclip. They aren't related in any way so why would this happen? As a graphic it doesn't have an intance name and nothing is happening to it. It's not animated or anything. It's just sitting on the stage. So why would changing it to a movieclip cause me such problems?
If it's a graphic symbol, then try opening it up for editing and thencreate a movieclip out of what's inside it. Take that movieclip from your library and use that.