I've clocked over 191 hours in Fallout New Vegas, and just today it suddenly stopped working. It was running fine this morning, but now as soon as I click "Play" from the launcher it doesnt even make it to the title screen before crashing. It started when I decided to try the Pipboy Readius mod. After adding NVSE and Readius files the game started crashing every time I tried to start it up. Tried removing the added NVSE and Readius, still crashes. Uninstalled and redownloaded game, still crashes. Tried renaming "ArchiveInvalidationInvalidated!.bsa" to "Fallout - ArchiveInvalidation.bsa" and editing fallout_default.ini etc with changed names. Still crashes. Used "verify integrity of game cashe..." through steam library, still crashes. One thing of note is that everytime I try the "verify integrity of game cashe", it always finds 1 file and updates. But the game still crashes. Even running the verification twice or more in a row it will always find 1 file problem, but it doesnt seem to be fixing properly. I'm at my wits end, nothing is working. I dont understand whats happened, no fixes I know off are working at all.