In setting up the new Mac to host MovableType, I ended up wiping out all of the MT and MT-Static code from the existing site. (Folders had same names and I thought I was operating locally.) A quick restore from the backup copies on Yoda along w/ some file permission setting (chmod 755) got things back up.
JEB:LOG
This is a test comment to see if the site is working. Resetting the mt.cfg file, that I accidentally wrote over w/ a test copy, seems to have fixed the problem.