OS X El Capitan and Native Instruments Audio Units Validation Issues – Workaround
Thanks to Eli Krantzberg for spotting this clever temporary workaround on the NI forum. In case you’re a user of Native Instruments’ products and got a little too trigger happy upgrading to OS X El Capitan – ending up with Native Instruments Audio Unit validation issues – read this.
The trick is to replace the auvaltool, which handles Audio Unit validation, with an older version. Before you can do this however, you’ll have to disable “System Integrity Protection” – one of El Capitan’s new features that protects system files from being modified – by rebooting into recovery mode.
You can read about the workaround here.