MakeMDL help

Ok. Ivwe made my plane and i want to check that it looks ok in FS9. I havent named everythink correctly yet and there are no animations. Does this matter? Anyway i exported it as an .X using the pandasoft directx exproter for 3ds max 6 BETA. Then i used makemdl on the .x file and it crashed with an error. This is the log file :
Running model
Start! (C:\Documents and Settings\William\My Documents\Extra 300L two-seater\model.X)
Loading X C:\Documents and Settings\William\My Documents\Extra 300L two-seater\model.X...
Processing...
Assertion failed: file C:\fs8\Tools\utils\source\MakeMDL.sdk\xfileprocess.cpp, line 196 (pMatrix)
Model units are 1024.00 units/meter
Sorting by Material...
Optimize Parts...
Welding...
Generate BGL...
Error!
Error!
I have fs9 not fs8. And i cant work out the problem. HELP ME SOMEONE PLEASE.
Running model
Start! (C:\Documents and Settings\William\My Documents\Extra 300L two-seater\model.X)
Loading X C:\Documents and Settings\William\My Documents\Extra 300L two-seater\model.X...
Processing...
Assertion failed: file C:\fs8\Tools\utils\source\MakeMDL.sdk\xfileprocess.cpp, line 196 (pMatrix)
Model units are 1024.00 units/meter
Sorting by Material...
Optimize Parts...
Welding...
Generate BGL...
Error!
Error!
I have fs9 not fs8. And i cant work out the problem. HELP ME SOMEONE PLEASE.