Installed and set up 1.2.1 and everything was working beautifully. Had events created, users signing up for 'em, and life was good.

:up:
Upgraded to 1.2.3, and now getting "Unknown function: curl_init()" error.

working on the issue with the host. I (and my users) love the add-on. I'm just hoping I can revert to the old version without erasing all my event data, until I can figure something out with my host, again. :erm:
Weird. cURL library wasn't included on the server. Time to recompile!