One of the big culprits for this in LW is using the cut and paste. Say, you cut the nose off and paste it into another layer to work on, and then paste it back onto the face. If you export the head as an object you'll probably get wrong # of vertices error. If you use the merge command and then export the head, the # of vertices will be right, but the morph will explode. Apparently LW reorders the vertices when merging objects. So that's one thing to avoid. Regards- Lemurtek