It looks like this might be a bug, but Im not sure.
When you load two or more MediaDispay/Player-components into different levels (using loadMovieNum()) in a project, the project will crash/freeze.
Its enough just having one of these components in the library (ie. not on the stage) in two or more .swf’s that gets loaded into the project, for it all to freeze up.
Is it a bug, or am I just missing something obvious again 
