Thursday, October 31, 2013

Gradebook is damaged and can't be opened.

If you get the error "Gradebook is damaged and can't be opened. You should move it to the trash." while trying to install the stand-alone PowerTeacher application, try this solution found on MBUSD.net below:

PowerTeacher Gradebook has a way of opening Mac that bypass Java which may cause following error: 'Gradebook is damaged and can't be opened. You should move it to the trash.'
Solution
  • Click on  (upper left) | System Preferences… | Security & Privacy ➟ Click on the Lock (picture icon lower left) and enter your password (usually district email password) click on Unlock 
  • General ➟ 'Allow applications downloaded from:' click on Anywhere
  • Click on Allow From Anywhere and launch PowerTeacher Gradebook

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