UR242 - Desactivated REV-X, possible or not?


I’ve a little problem with my UR242 interface, and I wonder if it’s really a problem or not, so I’m coming to get answers here!

Is it possible to deactivate the “send” REV-X which appear as outputs 3-4 in my Logic Pro X. Because it is impossible for me to deactivate it, when I click on the “send” button always stay on! (see attached image)

I specify that I’m under Mac OS 10.13.6 (High Sierra) and that my UR-242 is up to date as well as the Basic FX suite.

Hello, nobody can help me!?

It’s strange because with logic this output is 3-4 and in the UR242 manual it’s the MASTER.