Can not shut down MAc Book Air. Messages will not quit
MacBook Air will not shut down. Error Messages = "Messages interrupted shut down..." When I go to Messages Quit is shaded.
MacBook Air, OS X Mavericks (10.9.5)
Press and hold down the Power button until the computer shuts down. To simply quit Messages press Command-Option-Esc to open the Task Manager. Select Messages then click the Force Quit button.