I have successfully modded Oblivion for years and never had this odd problem. Any esp altered and saved by my GECK installation will not load with Fallout, even though it is checked in the DATA window and in Fallout Mod Manager. Any file created by my GECK installation suffers the same fate. If I download a mod from TESNEXUS it will load and play just fine. As soon as I use my GECK to alter the smallest thing in that file, then save it with my GECK (without changing the file name, textures, meshes, extensions, etc) the esp will not load even though it shows as checked in the launcher DATA window and in FOMM. I have tried reinstalling GECK. It is installed in the correct folder. GECK can load and read the esp's fine. When I alter them, GECK shows the alterations fine. If I save them and re-open them in GECK, that works fine, but the Fallout game does not load them. I have tried different versions of archive invalidation but that does not seem to be the problem. I can run anyone's mods fine, but as soon as I hit the SAVE button in my GECK that mod becomes unreadable by FO3.

Anyone have any thoughts or suggestions?

Windows 7
Nvidia graphics card w/512

Fallingrising

You have a patched game. You also need a patched GECK.
An older version of the GECK will make the mod an older version and be ignored when you load it in the patched game.

Thanks, that was the problem. You have my gratitude.

Out