So, I haven't been able to figure out how to solve this. Basically, my STF8300 will every once in awhile decide not to actuate a frame. The Yahoo! Group says it's a driver issue... and they're working it. I end up with a bad frame every once in awhile. From what I can tell, Subframeselector doesn't know what to do if it can't detect stars... it ends up crashing PI every time. Is there a way to fix the behavior? Some way for it to either fail gracefully or skip the file?