My mail application does not open anymore. It appears on the dock, but neither opens, nor does it close. Also, can't get the Mac to shut down, as it says the app is still open.
What can I do?
I have OS X 10.6.8 Snow leopard.
You can Force Quit an application. Press the keys (at the same time) : command + option + escape
You will see a window when you can select an application and click Force Quit.
If that doesn't work, to shut down, press for at least 5 seconds on the power button of your Mac.
Hope this will help.
Retrieving data ...