I cant get any object i make with xsi mod tools 6.01 to work. Here are the exact steps i took:
1) created a null and renamed it to dummyroot
2) create a simple cube with 432 triangles and put it under dummyroot
3) put a texture bes2_bldg_set01.tga and renamed it to com_bldg_box.tga
4) saved it as com_bldg_box
5) went to crosswalk, then export as xsi and checked and unchecked all the things that repsharpshooter said to and i hit export
6)moved the file and texture to the folder that mshex 3 is in and typed in the name of it and it did its thing then it only makes a 1kb msh file
7)i t open it with 3d object converter and it says unrecognized or unsupported file type (or no valid object found)

did you apply the texture on the cube?

yes here is picture of it. ugh now it wont let me show picture

doesn't matter, i know what error your talking about, its not the texture. try freezing the model and freezing all transforms. if that doesnt work, export your cube to .obj file, then re-import it. i know it sounds strange but i've had similar problems that resolve themselves by doing so.

YES! at last! it worked! thank you! thank you!