Noise gate detected issue

I’ve been searching this forum but keep coming up on threads that never got answered. I randomly get a message that says “Noise gate detected,” when profiling and there is no noise gate anywhere. There is no built in noise gate of any kind on these heads and the profiles always turn out sounding like garbage...like, when you A/B the profile with the actual amp, it’s laughable how awful it is.

Any ideas are appreciated. Thanks!

Quote from DonPetersen

when you make a Profile of a patch cable (Send -> patch cable -> Return),

does it come out o.k. (clean, no error mesages)?

Yes, I’ve tried this before and it turned out fine...which I don’t understand.

I’ve also had this happen with more than 1 type of head. There’s literally nothing to my signal chain.

Guitar into Kemper/Kemper DI into Boost (tried it without the boost, too)

Microphone xlr into BAE Preamp, preamp into Kemper. I’ve also tried bypassing the BAE and going straight to the Kemper.