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ical server 509 error

304 Views 1 Reply Latest reply: Jul 10, 2012 1:19 PM by Neil2 RSS
jameshiller Calculating status...
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Jul 5, 2012 2:59 PM

I recently upgraded from Snow Leopard to Lion, 10.7.4.  I'm running an iMac 3.3ghz Intel Core Duo.


When I open iCal the program gives this error message and freezes (requires force quit--nothing works): 


     The server responded with "509" to operation



I cannot find any fix and the program is inusable.  This is very frustrating.  Any meaningful help will be greatly appreciated.

iMac G5 Power PC, Mac OS X (10.4.10)
  • Neil2 Calculating status...
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    Jul 10, 2012 1:19 PM (in response to jameshiller)

    Has this been resolved?  I have this problem too.  MobileMe created many duplicate categories (around 50-100).  Some have events in them, some are empty.  Do you have any duplicates?  That can cause problems.  I tried to go through them and delete the empty ones, but that is tedious work because the web app is so slow and the other apps wont list the events in the category, so I don't know if it's empty.  Anyway, after many hours of work, iCloud re-duplicated them! I'm frustrated.


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