Thank you, I knew it would be something simple...!

How can I remove tracks from a Submix track please...?

Due to glitching/pausing, I changed from Asio to WaveRT. When I loaded a project I received an error message saying could not arm one or more tracks, no input device available... I'm using Behringer UMC 204 HD, Windows 10.. I have changed to and from Asio to Wave RT before but it was all good... It ...