I recently installed PROTOTYPE 2 from my friend's shared library. As it is infamous for, it has a tremendously difficult FPS rate for computers with AMD graphics cards, and often needs file modification for a fix. I noticed that the fix worked, but now my JKJA will not launch without immediately crashing. This problem seems only in JK, and no others. I have tried troubleshooting compatibility, running as administrator, and running it from different shortcuts, exe's and launchers. I might need to uninstall the game to fix it, but I would like to know if there are any other potential fixes. If not, what file contains the custom class data for MBII so I might pull that out and then delete and re-install. Thanks.