Are the clip's missing a name?
Yes! I too keep trying to move clips and get relentless crashing. My clips are all named. I also tried to rename a clip and when I moved it, CS6 crashed just like before. Is there another clip name you are referring to?
I have the same crashing problem in CS6, every time I try to move clips up and down on the timeline, CS6 crashes relentlessly. Yes, my clips have names?? I even tried renaming a clip, but it still crashed identically.