downloading software programs from peer to peer is not a good idea! who knows what kind of viruses may be bundled with it. Even if you scan everything that you download, the file may have been corrupted in the uploading/downloading process.
not to mention the fact that you didn't even check to see if it was the latest version before downloading. my money is on this being your problem.
another problem with peer to peer is that cracks are often bundled with the programs. not only are cracks also a risk for viruses, but cracks are ILLEGAL.
anydvd is an outstanding program, using p2p to obtain the program with a crack rather than support one of the best decryption programs out there makes many people (including myself!) very angry!