EDIT: I found one emulator that had the Autofix Checksum option and after a couple of hours of experimenting with Hypercam, I can record movies from Gens. Thanks for the help.
Well thanks for replying, better late than never! :D
Aw, that stinks. You see I'm doing a series on corruptions and this is the only emulator that will actually play corrupted games, all the others flash a red screen.
Also, I tried doing what you said and it still closes. The Superfast rendering ...