HT1338: OS X: Updating OS X and Mac App Store appsLearn about OS X: Updating OS X and Mac App Store apps
Currently Being ModeratedDec 4, 2012 4:55 AM (in response to crowsnest23)
Tried Force Quit?
Press command + option + esc keys together at the same time.
When Force Quit window appears, select iCal if not already.
Press Force Quit button at the bottom of the window.
iCal should quit.
If this does not help, press the power button for 7 or more seconds.
Computer will shut down.
Currently Being ModeratedDec 4, 2012 4:56 AM (in response to crowsnest23)
Command - option - escape keys opens the Force Quit dialog window.