No CTD, it just -freezes- the computer. Only a reboot seems to help. Game plays fine otherwise. I'm running FOMM and Darn's UI, AFIK the latest builds of all three. Tried "fallout safe exit" to no avail. I delete FOSE and the game exits normally. Running FO3 GOTY (Retail) with all the DLC. ALL OTHER MODS DISABLED. Machine is Toshiba Qosimo, i7 processor running at 160 Ghz, 6 GB ram, NVidia GeForce GTS 360M video card all on Windows 7 64bit. I'd love to be able to run FOSE without this problem because of the added goodies in Darn's UI. Any suggestions? Yes, clean install with no other mods still seems to cause the problem. 10Q Engel