Okay so now I have a problem, there is an invisible barrier haunting me now

:
http://imageshack.us/photo/my-images/849/oddity.jpg/
The image is painted over because I'm making the model for someone and I don't know if they want part of it to be seen.
I don't know how well it can be seen but there is a big hole there (that's supposed to be there) and it has collision there, nothing can get through, It's not a hexedit or anything, there are no polies there in xsi.
All it is is a cube with the normals inverted, subprojection applied to polies, then part of that deleted so that there would be a hole in it.
Also what is making the textures all wacky? They look fine in XSI
I'm using xsi 7.5. Please help me fix. It took me 20 minutes to apply the envmap in meshtool and I don't want to have to do that all over again, if I could just hex edit or something...
