Help Exporting after save

Hi everyone as the title states i’ve been having trouble exporting a model after saving it under .blend. I decided to save the project and finish it later, but, after a while, and trying to export it, i couldn’t find any other exporting options but these ones.

VRML 1.0…
DXF…
STL…

Same with import options. I’m currently using 2.49b and need to export in Gamebryo netimmerse but all the other options seem to disapear after saving under .blend. Any help would be great. Thanks

You’re using this stuff I presume?

http://niftools.sourceforge.net/wiki/Blender

I don’t know of any reason that having saved your .blend file would affect your ability to export.