I can't reproduce your issue. Which version of Flash are you using? Which platform (Mac or Window)? Can you please post your fla so I can look it over?
Flash Authoring, QA
Hi *Q and thanks for replying. I am running Windows (7) with Flash professional CS5.
I have tried myself to reproduce my issue, but I can't. I just have one animation which really doesn't want to do it properly.
Filtered FLA download: http://www.megaupload.com/?d=AV21A5O0
I deleted all other content but still this little parts doesn't want to work.
Looks like nobody knows why it isn't working? Is there a way to report this as a bug to adobe staff because aparently they are not on their own forums...
I've looked over your file and I didn't see any movieclip with a blur filter applied to it. Which symbol on which layer were you having issue with? There were 5 masks on your main timeline and they all seems to be working correctly.