Can't select mods

[Spectre216]

i can't select the .esp i made, even with the fallout mod manager, if i look at it in the geck editor there's a lock over it, how do i get this to work.

[funkidud3]

It has a warning on the setting up geck about something similar to your case on the geck tutorials

 

here: Geck tuts

 

it says

Don't see your .esp file? Verify that you installed the GECK to the same directory as your retail installation of Fallout 3. The file should have been created in a \Data sub-directory in that directory. This is where the launcher looks for data files.

Under Vista, if you are not running as Administrator, the data file may have been created in a shadow directory (with a name like "\Users\Me\AppData\Local\VirtualStore\Program Files\Bethesda Softworks\Fallout3\Data"), where it is visible to the GECK but not to the Fallout3 launcher. You can avoid this by always running the GECK as Administrator or by modifying the USERS permissions for the Fallout 3 directory ONCE.