Well, I fixed the permissions. Came up with that on my own ;).  There were a lot of problems after I had to delete a user which had become troublesome.  Not the person, I just had to backup my son's data and destroy his user after he had found a new and exciting way to crash the system... hard.

Still didn't work until after I had d/led the application file about three times. Now it works, yay.

Interesting about the broken Save Image As. That seems like it would be a relatively easy fix and early on the prioritization. Is there a patch in the pipeline any time soon?

EDIT: Thank you for the help, especially Dan.

PS: Now I need to Target Mode my old laptop and recover my user objects and materials. In all the excitement and repeated installs it looks like I ate my backup. Me ineptum.