Cannot add events in calendar
The following is the problem; I updated my Mobile Me account to iCloud, installed iOS5 on my iPhone and Lion 10.7.2. to my iMac. After this my calendar was transferred to icloud as well as my contacts. Perfect, I thought. Until I wanted to use the calendar. I cannot add events anymore on my iPhone. If I add an event it says; 'Cannot add event. There has been an unexpected error'. I want to safe events to my iCloud calender which you can instruct in the menu on the above left in the calender app.
I backupped my phone and restored it twice. After the restore the calendar works again, and then suddenly after 1 or 2 days it goes back to the same error as before the reinstall. It drives me nuts. Even the service team in the iAm store didn't know what was going on. Please help me out.
iPhone 4, iOS 5.0.1, iMac Lion 10.7.2, iCloud