A weird thing just happened: I was going to play around with a full length feature movie file in SMS 13.0 which I converted to MPEG 2. I added the media file to a new project and then double-clicked on it (I have the program set to open in the trimmer on a double-click - great idea, Steve). It loaded fine and it played back fine. I chose a very small section in the trimmer and made a subclip. Suddenly, the movie file on the trimmer timeline looked like it kind of got sucked towards the START button on the lower left - I can't describe it any better.
When I tried to double-click the subclip file, the trimmer did not open up. I tried double-clicking other files: trimmer not opening. I closed out of the program and rebooted the computer and re-opened SMS 13.0: trimmer still not opening. I tried re-loading the files to the movie project: trimmer not opening. I tried changing preferences back to loading movie file to timeline on a double-click. That worked fine. I changed preferences back to loading into trimmer on a double-click: trimmer not opening. I've tried dragging files to timeline and right-clicking: I get the trimmer choice in the pop-up menu, but trimmer will not open. I tried View>Window>Trimmer: trimmer not opening. I've run out of solutions to try short of re-installing the program onto the computer. Any ideas?
I tried to delete this post, but was not permitted to.
SOLUTION: I opened the START menu and opened up SMS from there. I tried other projects first and the trimmer worked fine. I then tried the problem project and it works fine now. I guess the "being sucked into the START button" had something to do with it. Back to work......