If you have been one of the MainStage users experiencing any of the numerous minor issues since the last update including problems with parameter mapping, screen controls, overall stability, loopback plug-in, and playback plug-in, you will be happy to know an update has been released to address them all. The MainStage 2.1.1 update is available through Software Update and addressed over 40 minor issues (full list of fixes here) as well as some 32-bit problems users have been reporting.