I was just about to update this topic as I assumed something similar. As audio had massive delays (3-4 secs) the other day I turned off everything on one of my computers to see if gets better (didn't :). But today, I used another computer, then experienced the same issue on the 3rd one (yes I have 3 boxes, yes :P)
So, assumption was what you say, but, please note that on 2nd PC I was able to start campaign in the morning and went down in the afternoon only - which is pretty weird...
3rd box was dead immediately I tried so that's somewhat consequent according to the issue you mention.
Either way, the problem is not the bug, but the fact one doesn't know what's wrong - no error message, no hint, nothing. Nowadays that's a key problem in new software if you ask me.
Thanks for the feedback, though ;)