Problem with Keyboard Maestro when Karabiner is loaded.
And what might that problem be?
Since I'm pretty sure lots of people have Karabiner and Keyboard Maestro installed and working, I imagine it is not a particularly common or intrusive problem.
Personally, I found keys got lost or stuck when I last had Karabiner Elements installed, so not longer run in, and just hold all the modifier keys down when I want a Hyper key, but it would be nice to have it working again.