System Overload message in MainStage
If you've seen the scary "System Overload" message box in MainStage, you're not alone! This message can pop up in concert files that are working perfectly fine.
If you are not having any sonic issues (like dropped notes, distortion, etc), then you can safely disable the message. In the MainStage menus, go to: MainStage > Preferences > Audio > Advanced Settings... and uncheck the check the box titled Display audio engine overload message.
If you are having further audio problems, proceed to this page: How To Fix Audio Issues in MainStage