Hi! Using WaveLab 8.0.3, RME ADI8-QSM, RME HDSPe MADI, Mac Pro 2010. Help to connect two external device. How to configure?
It looks like you’re trying to put another instance of the External Gear plugin in Slot 3 (that’s how I replicate your error message anyway.) It can only be used once. Because I’m not very familiar using it, I would go to the Help menu and search for External Gear. That will tell you how to set it up.