Logic Pro: User interface for plug-ins may not open


User interfaces for plug-ins on Audio Instruments sometimes do not open. When this happens, the affected plug-ins have no effect.

Products affected

• Logic Pro 7


This occurs if plug-ins are inserted in slot 16 or higher on the Audio Instrument. Avoid using more than 15 plug-ins (besides the instrument plug-in) on any single Audio Instrument channel. If there are empty slots available before the affected plug-ins, use the hand tool in the Track Mixer to move the plug-ins to the earlier slots.

This document will be updated as more information becomes available.