two Audio Interfaces in Pro Tools 12.5.2 [SOLVED]

[Yehudi]

Long time ago, I saw somewhere a way to use 2 Audio-Interfaces in Pro Tools. So I use my Eleven Rack and the Internal Output from the Mac Book Pro. The Internal I used for my headphone Mix, and the Eleven Rack for the Headphone for the singer. It was working fine until I put the language from german to english, and the preferences was gone. I couldn't make the preferences again, even that only one interface is working. But with the time Machine Backup I get the preferences back, but only the eleven rack is working. I don't get the internal interface back. I made all the stuff one or two years ago with Pro Tools 10 or 11. I'm stand there like a duck in a thunder storm. Did they change something with Pro Tools 12 or 12.5.2, that it's not possible to create that again?

[Yehudi]

solved:
OS X -> Audio Midi Setup -> Audio
Pro Tools Aggregate I/O
- Output (intern)
- Avid Eleven Rack

In Pro Tools

Setup
- Hardware -> Pro Tools Aggregate I/O
- Playback Engine -> Pro Tools Aggregate I/O
- I/O -> Pro Tools Aggregate I/O
- Monitor only on Mainoutput

[epic41]

Thanks for posting the solution!!