problem of loading cal3d model in crystalspace

hi, all
I meet a problem of loading cal3d model in crystalspace.
First I create a cal3d model in the 3dsmax and export this model, in the cal3d's miniviewer, it works well. And then in the crystalspace, I try to use celtest to load this new model, system can show this model, but one of leg of the model cannot move. I'm using the cal3d-0.10.0 and CrystalSpace Win32 libraries 0.99r0_013.
Is there any limitation about the cal3d displaying in crystalspace? Does anyone meet the same problem before?

Any help and suggestion will be appreciate!
Frank