I'm still unable to get mine going......I followed the link from above and i dont have this option (highlight below) For some cases if the "Allow" button does not change anything, or the "Allow" button does NOT disappear after clicking. Please try these steps: Go into: System Preferences > Keyboard > Shortcuts > Select 'All Controls'. Then: Go back to System Preferences > Privacy & Security > Press 'Tab' until 'Allow' is selected > Press 'Spacebar'. Note: the Privacy & Security page may need to be unlocked before 'Tab' will work. I'd love some help guys? ?