Akai mk261 not trigeering midi software instrumentn in cubase

MAC MINI OSX CATALINA. CUBASE 11. RME FIREFACE 400. I’m using the USB input into the computer anbd it’s showing signal coming in on the transport. It works fine in Logic Any ideas?

Hi,

Double check, the MIDI Port is not in use for any Remote Device in Cubase, please. Do soon the Studio > Studio Setup.

Also double check the Preferences > MIDI > MIDI Filter. By default only SysEx is filtered out.