Does the mesh gets bigger and go out of sight? Then you have scaled the mesh. Does it crumble and distort, without getting bigger? Then your application does not preserve the Order of the Vertices.

What did you use for morphing? If you use Cinema, use Spanki's plugin, available here in Freestuff.

A ship in port is safe; but that is not what ships are built for.
Sail out to sea and do new things.
-"Amazing Grace" Hopper

Avatar image of me done by Chidori.