I had uncommented OTHER_VHOSTS, and didn't realize it didn't have a $ before it. But now I get this error:
[lj@zion ~]$ /home/lj/bin/upgrading/update-db.pl --runsql --populate
Updating cluster: 0
0: ERROR: Can't connect to the database (clust#0), so I can't update it.
Can't call method "do" on an undefined value at /home/lj/cgi-bin/ljlib.pl line 5023.