I've been trying to get calendars added to a new profile and none of them seem to work. All of the calendars report as momentarily unavailable. I've tried removing and re-adding the calendars but nothing I try seems to get it working. I'm trying to add two different calendars, one Google, one Zimbra. I've tried ICS and CalDAV but neither seem to work. I've also tried Lightning 1.8b1, 1.7, and 1.6 in Thunderbird 17.0a2, 16.0b1, 15.0, and 14.0 with no success. Any help in resolving this would be greatly appreciated.
I seem to have been able to correct this issue on my end, so I'm not sure this is actually a bug in the product. Resolving this WORKSFORME but will reopen if I find evidence showing this is a product bug.
To those coming here seeking an answer to a similar problem, I resolved this by deleting the calendar and adding a new Network calendar using CalDAV and a URL like https://<server>/dav/<username>/Calendar