I have some problems with MotionBuilder. When Im characterizing my character i get an error message : “Geometry warning: LeftArmRoll is 99.10 degrees away from it´s roll axis.” If i choose “Ignore” the animation will get messed up on the forearms.

I cant really see how this bone can be so off? And how do I fix this problem??

The mesh is rigged with CharacterStudio and got twistbones on the arms.

Heres a picture of the bonesetup in MB and the twist error:

http://img696.imageshack.us/img696/8145/mberrors.jpg

Thanks in advance!

I think its something similiar to this problem:
http://area.autodesk.com/forum/autodesk-motionbuilder/autodesk-motionbuilder-2009/biped-thigh-twist-joints/