I recently purchased Final Cut Express and have been slowly but steadily working my way through the steep learning curve with tutorials and experimenting. But there's no tutorial that tells me what to do if I know how to apply and adjust an effect/filter that won't respond! I can get filters to do the right things in the viewer, but when I double click on the clip in the timeline to do the ACTUAL application and edit, nothing makes a difference. None of the effects affect anything. I have already tried repairing my disk permissions and trashing my preferences. No such luck. Help?