May be of use to someone. I have been running RB successfully on my main PC for some time but last weekend I suddenly started getting it crashing at about 10 minute intervals with a serious error message from Windows. I have been trying to work out what could have been the cause of this change as I had not knowingly uploaded any new programs or made any changes to my PC. However, I have worked out that the automatic upgrade of Service pack 3 occurred just before the first crash. I tried everything to get RB working and finally had to completely remove and re-install the full program and USB drivers before I got it to run normally.
I cant prove exclusively that SP3 was the problem but a process of nothing else being done to my PC makes me think it could have disrupted something.
Regards
Mike