I recently downloaded DLC Dead Money and it crashed my game after the slideshow plays out. So I deleted local content from Steam and started over. I reinstalled the game. Deleted FNV Mod Manager, and reinstalled that. Now I cant even play at all. Everytime I run FNVMM the game crashes with an error message, "The application failed to initialize properly (0xc0000006). Click OK to terminate the application." Clicking Ok brings up the "FalloutNV has stopped working" error.

Am I missing something or do something wrong. Any help with this issue is greatly appreciated. I spent a lot of time searching the forums about this issue and have tried a lot of different things and have come up empty handed.