Bounce Problem

Am probably going to be flamed for not searching enough but I can't find the answer to my problem. So apologies in advance ... but I had a session earlier today where I tried to bounce the client's session and ended up with a file full of digital noise/buzz. Had to let the "client leave early whilst I edit". I've experienced this earlier this week ... and am getting worried.



PT11 and not happy with this risk. It's fortunate this client was cool but I'm not happy with this risk.



Any ideas?



M