I'm currently having a problem with my character rig. The model itself had already been rigged a while ago, but I recently needed to make some crucial changes in the geometry, so I tweaked it, deleted the non-deformer history and repainted the skin weights. After doing so I figured out that the blendshapes I previously created were broken, so I created new ones by duplicating the mesh a few times, deformed the copies, selected Add Blendshapes and also checked In front of chain as input order, pretty much the standard procedure.
Now for the problem, when I enable a blendshape for a facial expression, the head will go back to its default position, disregarding the deformation of the joints. When I check the input menu and try to move the blendshape input below the skin cluster Maya gives me the error message "skin_cluster is not deforming object".
Been trying around for hours and also couldn't find anything on google that solved this problem. Note that I need this rig to be working properly for an assignment that is due in a few weeks, any help is highly appreciated.
I sadly didn't! However, I figured that my mistake was combining the mesh with another mesh that I added to the main body. I ended up going back because the combine poly command and everything worked just fine! :)