Hi Alwain, here's a messagze from Damian. He can't acces the Forum anymore since he got banned 2 years ago....
"On FB page is a send mail button. Since I don't have acces to forum it is better to contact me directly via FB or toast. midi. editor@gmail.com in case of any issues."
I had similar issues with a my USB to Midi cable (warbling sound), but that it worked when I just selected the USB to Midi device in the IN and OUT but NOT in the CONTROLLER section (there i chose 'none') in the midi settings menu in the Toast ME editor.
You are now as far along as I am. I just got this loaded yesterday after struggling for several hours. It is my understanding that you need a MIDI interface for your computer so that you can connect to Kemper.
Put the mouse over a knob and hold the left mouse button down. Move mouse up screen to increase. Move mouse down screen to decrease. Don't try to turn the knob, it doesn't work like that.