The games are Marvel vs. Capcom 2, Street Fighter 3: Online Edition, and Darkstalkers Resurrection.
With Marvel vs. Capcom 2, I get a message saying that the disc is unreadable and to clean it with a soft cloth whenever it gets to the character select screen. For Street Fighter 3 and Darkstalkers, I get an error saying "game couldn't start. Try downloading again." I've cleared my cache, redownloaded them from my download history so many times and that doesn't work. I've even tried downloading them to a flash drive and playing them without the HDD even connected, but I get the same results. The only thing that seems to do anything is transferring my license to my console. But even that only lasts a few weeks until I start getting the same errors again. Unfortunately, I'm only allowed to do this once every few months.
Does anyone know the cause of these problems?