Hi. after converting from havok 5.5.0 to havok 6.0.0 I have run into this problem.
When I try to call SampleAndCombineAnimations for an hkaPose I get an assert:
HAVOK: .\Rig\hkaPose.cpp(148): [0x5A3281F6] Assert : ! isFlagOn(b, F_BONE_MODEL_DIRTY)
Trying to access uninitialized bone in pose
I'm not sure, but it may be related to the way I'm getting the data in the pose, which has changed in havok 6.0.0.
In 5.5.0 I used to use the writeAccessFloatSlotValues, writeAccessPoseLocalSpace, writeAccessPoseModelSpace funcions.