Registration window keeps coming up everytime I bring up replay media catcher

I was wondering if anybody can help me. The registration window keeps coming up everytime I bring up Replay Media Catcher 4 telling me that I am in a demo mode. I would put in my valid registration code and then the window disappears telling me that I have properly registered. It comes again later when I bring it up again. This is using up my registration count and thus if I use it all the time that later on I would not be able to register it anymore. Can anybody help. Thanks.