I have a .DOL of an obscure source port of DooM built for the gamecube. It was thought to be lost media, but I have a copy of it, and it seems to be corrupted by being stored on the Way Back Machine, as it only opens to a black screen no matter if its played on hardware or on an emulator:

Any idea what's wrong, or how to fix it? Or if there's anyone I should get in touch with that might be able to pull some wizardry on this?