Okay, I guess it worked it my from-scratch image because it grabbed stuff from the same cache directory.
One way that seems to work is to open a Monticello Browser, then do +Repository, and then fill in the repository info, which is:
MCHttpRepository location: 'http://kilana.unibe.ch:8888/Chuck' user: 'ls' password: ''
After that, installing from SqueakMap will work. I'll work on automating this better in the future; it's late today, however! Any ideas are welcome...
-Lex