Hi, I'm having some trouble with the iCal Server. Everything works just as it should until I restart the server. When I do all iCal clients get prompted with: The server responded with an error. The calendar https://serveraddress/principals/__uids__/{uid}/ was not found on the server. Make sure the URL is correct. And it keeps prompting about that until iCal.app crashes or I remove the account. When I add the account again in iCal everything seems to be working O.K... until I do another restart of the iCal server. It seems that it is only the "normal" account that are affected... Wiki Calendars work as they are suppose to even after a restart. I'm running a Mac OS X Server 10.6.4 with a Standalone directory. When I look in /var/log/caldavd/error.log I find the following: [-] notifications 2010-10-28 19:21:36+0200 XmlStream,clienthttp://twistedcaldav.notify.XMPPNotifier#info JID not allowed in roster: {@email} caldav-8010 PooledMemCacheProtocol,client http://twistedcaldav.extensions#info PROPFIND /principals/users/{users}/ HTTP/1.1 {} - marks what I have removed from the log. Any ideas why the iCal Server get amentia ? Because of this, all delegates and all that type of information also disappear upon restart. If I access the accounts from the web calendar it works just fine and after I've done that I can also access the account via iCal. When looking thru the principals/users/ listing via a web browser the users don't get added until I've either accessed it via web browser calendar or re-added it in iCal. So I'm guessing that the startup calendars process is a bit of. If there is any additional information that you might need to help me solve this conundrum, just ask. Thanks in advance Mvh Christoffer Winterkvist christoffer@winterkvist.com http://www.twitter.com/MrStench