Vertex Normal Invalid!

[Evil_Dude]

I couldn't find this problem anywhere else on the forums, but I've run into it more than once, and my solution was always to scrap whatever object had the problem in the past, but now it's happening on something i've spent a lot of time on. On level compiling, i get the following error message:

 
--- i95.ass
processing environment geometry...
mesh definition vertex normal invalid: (-1.000000, -1.000000, -1.000000)
couldn't parse definition #5
couldn't parse file 'c:\program files\microsoft games\halo 2 map editor\data\sce
narios\multi\i95\structure\i95.ass'
### ERROR structure import pipeline failed for scenarios\multi\i95\i95
Press any key to continue . . .

I have no idea what the "Mesh definition vertex normal invalid" means, but I know it applies to object #5 (In bluestreak's .ass exporter, it's object #6. The .ass file starts counting at 0, while the exporter starts at 1). Any idea of what's wrong or how to fix it would be appreciated.

OS: Windows Vista Business
Version: 3ds max 9.0
.ASS Exporter: ASS-Exporter_v1-0-0.ms
Are all objects linked to b_levelroot? Yes!

Thanks a bunch