The main problem this gives me is a few relatively small applications that I don't have master disks for - mostly shareware I've registered etc., like a webcam app I use for my digital microscope.
The applications I want to save are not involved in the crashes, as far as I know.
Is there any simple way to back up individual applications and reinstall them? Can I just copy them to a memory stick or DVD-R and put them back later? Or is it more complicated?