I downloaded Meida Player Classic as a DVD-playback program since my hard drive was formatted and didn't want to pay for a codec, but I have a problem. When I play a DVD movie in the program, in about 5-10 minutes, the prgram shut downs and then the movie stops. How do I fix this? The movie does has some scratches (but very faint scratches), but why would the program shut down? Can you help me please?