[SOLVED] CalDAV errors with iCal

[ewilen]

Has anyone been seeing errors of this sort in iCal?

Basically, iCal goes into offline mode with/without notice. When you try to go back online, you get an alert; the only solution is to quit/restart iCal.

One user copied down her error message:

Request for calendar failed.

The server responded with
"HTTP/1.1 500 Internal Server Error"
to operation CalDAVRevertEntityQueueableOperation.

I've also seen alerts offering to revert to server data, but I haven't noted the exact wording. In any case, clicking "okay" to revert to server doesn't do anything--you still have to quit & relaunch iCal.

The user in question is still using Mac OS 10.5.6 due to Bug 38112 – Creating appointments in iCal does not send the invite but once 5.0.17 is released, I'll upgrade her to 10.5.7. However I'm pretty sure I've seen the error under 10.5.7 as well.

[Blu3fish]

Yeah, ran into the same problem a few minutes ago. Haven't found a solution yet but if I do I'll update.

Edit: This might explain our woes: http://www.zimbra.com/forums/users/3...vitations.html

Seems to be related to an issue w/OS X 10.5.7 so either an OS X downgrade or a Zimbra upgrade is required to fix this particular issue. #lame

[ewilen]

The topic of this thread was happening under 10.5.6 as noted. That other thread is unrelated except that it describes why I didn't want to upgrade my Macs to 10.5.7.

Now that ZCS 5.0.18 has fixed bug 38112 I've upgraded all my Macs to 10.5.7. Since the ZCS to 5.0.18 upgrade I haven't seen this CalDAV error, so it's possible the server upgrade solved the problem, but it's a bit early to say.

If I was trying to reproduce the error I'd try messing with the calendar (or a single appointment) via the web interface and iCal simultaneously.

[ewilen]

Well, now the same user has been getting errors again, to the point that iCal is useless. She is on Mac OS X 10.5.8.

I tried turning off/on her iCal setup in the Zimbra control panel; I also tried deleting ~/Library/Calendars. Eventually she started getting different errors, but the upshot is still that iCal doesn't work.

The latest error, which appears consistently on launching iCal, is:

The server responded with
"HTTP/1.1 500 Internal Server Error"
to operation CalDAVDeleteEntityQueueableOperation.

I've also pared her Zimbra Calendar setup to the bare minimum: only one calendar, and no shared calendars. Her calendar is still shared with others; not sure if that might matter.

Where can I look in the server logs to see how this looks from Zimbra's perspective?

[ewilen]

Tentatively marking this SOLVED. The problem did not reappear when I configured iCal to access the user's Zimbra account from a different login on the same machine. So I decided it must be some corrupt data on the computer, not on Zimbra.

Solution: turn off iCal setup in Zimbra control panel, delete CalDAV account in iCal. Then move the following folders to the Trash (or some temporary location):

~/Library/Calendars
~/Library/Application Support/iCal
~/Library/Caches/com.apple.iCal

To be on the safe side I'd also move:

~/Library/Preferences/iCalExternalSync.plist
~/Library/Preferences/com.apple.iCal.plist
~/Library/Preferences/com.apple.iCal.helper.plist
~/Library/Preferences/ByHost/com.apple.iCal.helper.<arbitrary string>.plist
~/Library/Preferences/comp.apple.iCal.plist
~/Library/Preferences/com.apple.iCal.AlarmScheduler.plist

Then re-enable CalDAV setup in Zimbra control panel and confirm that account is set up by launching iCal and checking prefs.