green waveform turned monochrome and audio is disables

[Edmund28456233iriq]

Real head scratcher here - green waveform turned monochrome and audio is disabled. See pic: Red line tracks and all functions seem to work. But my editing came to a screeching halt. Annoying. I porpably disabled something with a key board shortcut by mistatke. Any insight would be helpful. Thanks

[SteveG_AudioMasters_]

Edit>Enable Channels>All Channels

The toggle for that is Ctrl+Shift+B - quite a difficult mistake to make!

[Edmund28456233iriq]

Genius. Thank you. I was copy & pasting a small section of silence over and over and stumbled onto the shortcut. I should take a class. I have a brand new bouncing baby podcast. May be worth it. Thx again. Ed