Master Mix Track Went Dead Mid-Session

[Stanley Arthur]

I use Audition only for multitrack mixing and exporting to .wav and .mp3. Recently, I was working on a session for several hours when the master mix track went dead, meaning that it no longer receives the signals from all of the session's tracks. I spent a couple of hours troubleshooting this to no avail. It's not a routing error. The session is useless now. Auto-saved session files have the same bug. I've opened previous session that work fine. I have been using Audition since before Adobe bought it and called it Audition (20 years?). Any ideas? Image attached.

[SteveG_AudioMasters_]

All of your individual track outputs appear to be routed to the direct stereo output, not the Mix channel. I strongly suspect that's why you get no indication!

[Stanley Arthur]

Respectfully, you are looking at the input, not the output. Most of the tracks are routed to a couple of aux busses (one for drums and one for vocals). The only tracks routed to the Mix are two aux busses and the track on the far right labled "Track 2". When looking at the multitrack mixer, the top-most option on every track is the input. In my case, input is automaically set to Default, which is a Sennheiser USB mic. That is never changed in my sessions because I don't RECORD anything. I am recording tracks on a TASCAM Model 20 and then importing them to Audition. The next option below the input selector is the OUTPUT selector. All of my output selections per track are correct, set to either an aux buss or "Mix".