Vertex Animation Tool problems

I’m using the Vertex Animation tool in 3ds Max and after I press “Process Animated Meshes” the program hangs at 99% forever saying “Creating the morph Targets”

Does anyone know a workaround or solution to this?

In case anyone sees this in the future, I got it working. I did two things which may have fixed it. I was exporting an animation from Maya to 3ds before using the tool. So before I exported from maya, I did a cleanup on the mesh. I also selected all the joints and baked their animation.