Is my 4.2 Mod Tool broken?

[Lupus]

I have read that people have managed to import .obj files into the 4.2 mod tool. Whenever I try I get a message saying "Function not implemented". I had someone send me a .xsi file and that imported ok. Is 4.2 supposed to be able to actually import .obj or not? I'm confused. Someone also managed to import the same .obj file I was trying to import, and it imported fine for them in XSI EXP.
Any help would be great, as I can feel my blood pressure rising.

 

[Cunbelin]

I think it is but it may have been set improperly by mistake, Do you have any other formats available to you ?

 

[Lupus]

I tried a few others but couldn't get them to work, only the .xsi . I guess I could use the uni computers to convert the format, but I'll try redownloading the mod tool and reinstall, and pray that works.