My Native Instruments Plug-in Fails Validation in Logic Pro X

Symptom

When launching Logic Pro X, the following error message appears:

Incompatible Audio Units found.

Cause

The NI plug-in fails to be validated by Logic's Plug-in Manager due to a corrupt activation file.

Solution

Clicking on the Start Plug-In Manager button of the error message will open Logic's Plug-In Manager and show which plug-in(s) are failing validation. In this example, Maschine 2 shows crashed validation.

Follow the steps below to resolve the issue:

1. The following files must be moved to the trash:

   • Mac HD > Users > Username > Library > Application Support > Native Instruments > *Product Name* folder (in our example, this would be the Maschine 2 folder)

   • MacHD > User > *Username* > Library > Preferences > com.native-instruments.*product name*.plist

   • MacHD > User > *Username* > Library > Caches > AudioUnitCache > com.apple.audiounits.cache
     

     Note: The User Library is a hidden folder on macOS. To access it, click 'Go' in the Finder menu bar and hold down the 'Alt' key. The Library entry will now appear in the menu.
     
     

2. Right-click on the Trash icon in the Dock and choose Empty Trash and then restart your computer.
3. Open Logic. It will rescan and activate all of your AU plug-ins.