Groove Agent 5 and Midi input

I have Groove Agent 5 as Standalone.
Midi in from Proteus MPS keyboard (showing in top left and selected)
Midi in from Akai MPD218 (showing in top left and selected)

I can see midi in from both sources. I can even set the notes on the pads using the ‘Learn Triger note’ function.
I cannot gets the MPD or the Keyboard to trigger the pad sounds. I am not seeing the pad impulse response on the GA5 pads.

It’s feels like a really simple problem. Any ideas?

All fine when within Cubase by the way.

I have the same problem. What’s more, standalone Groove Agent 5 SE works fine, while standalone Groove Agent 5 doesn’t want to work with midi controllers at the same settings. It can be seen that the MIDI signal enters the program (the indicator flashes), but the sounds of the pads are not reproduced. Does anyone know how to fix this problem?