I'm having a problem creating sub-clips. I noticed this when I tried to reverse a clip. If I try to reverse the playback or simply create a sub-clip, the image disappears. As a workaround, I tried using an envelope to reverse the speed by 100%. However, this creates a new problem: I can no longer edit the clip, or if I do, the edit jumps around.
By the way, I reverted to build 302 because the window layouts were constantly causing problems and editing envelopes no longer worked well. Does anyone have a solution for the black sub-clips or for editing clips played back at 100%?