Yep! I think it's solved now. 2.5 hours last night and no crash! Here's the steps for anyone that ever stumbles upon this thread. Credit goes to Redditor Gaavlan and the wonderful folks here: ok so: I opened CMD with admin's right. bcdedit /set nx OptOut rebooted. now I can add everything but fnv4gb.exe. Since I can add falloutNV.exe (the one in exes) I hope that'll do... If you don't know how to add programs to DEP exceptions: Right click My Computer select Properties Advanced system settings In the same tab in the performace box, select Settings DEP should be in the tab completely to the right add every fallout exe (I added the two falloutNV.exe, New Vegas Launcher and NVSE I hope that works... I don't know if I'll have the time to test this tonight
