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Steps to take:
1. Restart your Mac
2. Force quit the app:
2a. On your keyboard tap "Option" + "Command" + "Esc" simultaneously
2b. Select the troubled app then click "Force Quit"

2c. Now try opening the app again.
3. Check for updates on your device
4. Re-install your app:
4a. Open finder, go to the applications folder, drag the problem app to the trash folder.
4b. Install the application
For further assistance please reach out to the Help Desk via phone at 315-386-7448 or email at helpdesk@canton.edu