I'm running Win 7, and the game had been working fine stock standard. I tried to mod the game. Installed: ArchiveInvalidation Invalidated! v1.0.6 Fallout Mod Manager (fomm 0_10_2) Animated Prostitution (and all the files it was suggested it work best wtih?) - Animated Prostitution ESM - Alice Package -APSoundPackV2 -bzFO3MalesV1dot6d -bzsyArmourFixesV2dot2 -Fem_Voice_Package -Naouak_Female_Body_Replacer_v4-1 -Type3_V2_TEXTURE_pack -TYPE3RAIDERTEXURESfull I thought I would give that one mod a try before downloading others. I added the packages though Fallout Mod Manager, and ran Archive Invalidation Invalidated. Tried to launch the game and it crashed straight away. Unchecked all of the mods, tried again, no effect. Tried uninstalling Fallout 3 completely and re-installing the game. Before running any mods, I thought I'd give Fallout3 a try and it crashed at start up again. So Uninstalling and Reinstalling the game had no effect, and now I'm still with out fallout :/ How many mods are there that change registry values? I'm suspecting that ArchiveInvalidation Invalidated! v1.0.6 may be the culprut, but I can't be sure as I'm not entirely sure about how it does what it does. Does this mod change redgistery values regarding Fallout 3. If so, what does it change, and what are those valuse supposed to be. My origional F3 installation directory was in Program files, a place that ArchiveInvalidation does not like. Even so I've re-installed the game to a different spot. If a redgistry entry was changed, it wouldn''t have been changed back by the F3 uninstaller. Could the other pervy mods have caused this?