Maybe the latest build will fix it, but between windows updates and kaspary database rebuilds, I've yet to actually get any work done on my VM (running Windows 7). Plus delays/hangs on the mac side are awful. Will update this post if things improve, but so far this is turning out to be another example of not buying v.X.o of anything.
Could you please run your Windows 7, then go to top menu -> Help -> Report a Problem
then paste the problem report ID right in this thread? I'd like to help you, but please give some hint