That’s even less encouraging. I was hoping it was something with the New Mac Pro’s AMD cards and just ironing out bugs with that.
I used FCP for YEARS and it certainly had its share of bugs, but it seemed to me that whenever there was a bug, it was consistent and repeatable so you could figure out how to work around it. The Adobe bugs seem to appear and disappear at random and stuff has been broken with program updates in major ways (the insert loud buzz for every audio transition at the head of an audio clip one was wonderful).
Just out of curiosity, what is the footage you are working with that gave you the random frame? Maybe it is something with ProRes or QuickTime based footage?