Also, the tail has a "lion tuft" morph, but it doesn't seem to work correctly. I can see the tuft in wireframe mode, but it doesn't render. Is this the geometry switching problem mentioned in other threads here, or some other problem? I could swear it used to work

Might be. Although it seems it was the dial itself that was hidden with the genital switch changes.

If you are seeing the switch mesh in wireframe it sounds more like another issue. Wouldn't be able to tell without more information, or actually looking at it.