Oh, how embarrassing. Got new versions of OpenInteract and SPOPS out the door only to find a bug in one of the OI packages (browser-based object/task security editing won't save the settings). Ack! Quick release of a new version out as quickly as possible.
The possibility of this happening probably increases with the number of changes made between versions. That'll teach me to change so many things at once.
Now that things aren't so panicked, I'm revisiting the server issue so I can get IMAP up and running. I'm being ambitious and trying for Cyrus on the first shot. We'll see...
(Originally posted elsewhere)