Had the same problem with Truespace 5.2. Caligari just can't get that .x format right, or they just haven't updated it with DX9.0b.
With TS5.2 we can just use the TrueX plug-in to solve our problems, but there are a few other precautions to take.
1.) If you made your model from many pieces,
do not glue them together! Use the object combine tool. For some reason the model data doesn't export correctly if it hasn't fully been merged.
2.) Check your DX export settings. Not much I can help you with here as I don't have GS, you'll just have to mess with the settings.
If nothing, post on the GS forums and see if anyone else is having the same problem or a plug-in has been made.
A book? I hate book. Book is stupid.
(Formerly known as Yellow)
