[F8] Filters

This is my first time using filters in a game, cus I've not done any in f8 yet. The problem I have is that I apply filters to some mc's and it appears to be working in flash, but when I run the swf there's no filter at all, but that doesn't happens to all the movie clips. There are some that do show the filter. Is there something I must know about filters that can be causing this problem?

Thanks in advance?

I've tried making the mc's smaller, and I think that's the matter. Is there any size restriction?

yes, I believe its something like 2800x2800 px

I think I'll have to make smaller movieclips into a big one then. Thanks so much for the reply! :D