Logie

I have a program called CapWiz on my computer which is used mainly for transferring VHS to DVD. I've had it for a couple of years and have been happily using it with no problems, up until last night. Basically, what is happening now is that when I click on the icon to start up the program, the "egg-timer" icon flashes for a second or two and then nothing. It simply will not start up. It was connected via a USB hub, so I tried removing it from that and connecting it directly to a port first in the front of the computer, then in the back, and still no luck. I'm just really curious as to why it has suddenly "died" for want of a better word. Unfortunately, uninstalling and reinstalling isn't an option, as I can't seem to find the original disc that came with it. Any suggestions would be appreciated.