I found the fragmotion fbx version to be a bit hit and miss for importing into blender, blenders fbx import only works with a couple of fbx versions, I'd suggest for statix models export from fragmotion in obj to import into blender.
Ive only ever found one .X importer for blende which again is really hit and miss, the blender .X exporter is great though, the only issue ive found with it is when exporting rigged models with weighting, it doesn't export the weights quite right for gameguru, but if you export it as .X from blender, then import it into fragmotion and export it back out again fragmotion fixes the issue.
I agree with wizard again, .X isnt the best format to work with, i only use it because i put stuff on the store and when i started uploading stuff in .dbo everything was rejected because the "gameguru ready" flag wont accept anything without a .X file in the folder.
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