I've managed to fix my GECK problem to get it stared up, but now it says:

MODELS: Unable to load CTL file
DEFAULT: Cannot load the stars.

Then it freezes and crashes... Any help?

One thing this means is, the GECK is not finding the .bsa files where it expects to see them.

Mine are in " C:\Program Files\Bethesda Softworks\Fallout 3\Data\ "

Well, that fixed that problem, but it's still randomly crashing and closing itself...