ical on mac does not synchronize anymore
hi,
the ical on my mac is not synchronizing to icloud anymore. while displaying "iCal - synchronizing" in the titel of the application, nothing happens, but also no error is displayed. adressbook is syncing fine and also the apps on my other macs and devices are fine, too. so what can I do? why there is no time out and displaying an error message? I tried to deactivate the icloud account in ical and then reactive it, but it does not help.
this happens on a old mac pro with mac osx 10.7.5
thanks,
max