Logic Studio (2009), Logic Express 9: May unexpectedly quit during save, bounce, or quit

After upgrading to Mac OS X v10.6 Snow Leopard from Mac OS v10.5 Leopard, Logic Express 9 and Logic Studio (2009) applications such as Logic Pro 9 or SoundTrack Pro 3 may quit unexpectedly. This may occur when attempting to save, bounce, or quit.

This article has been archived and is no longer updated by Apple.

This can happen if there is an issue with the ProKit framework. To resolve the issue: 

  1. Place the file  /System/Library/PrivateFrameworks/ProKit.framework  in the trash. Enter an administrator password when requested.
  2. Install ProKit 7.0 from this link.
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