Thanks for the tips, but this has nothing to do with those settings. When I use these presets in a DAW (f.e. Ableton Live 8.3) they're working fine, even when I use the mouse to click on the virtual keyboard keys, they work.
This is only happening when I use a keyboard controller.
The CS-80V2 is receiving the signals but the patches don't sound.
The MIDI device and -channel are set to "All".
Even when I choose a specific device and channel (In my case: Device 2 = Channel 2 = AE 25 The Player; Device 3 = Channel 3 = AE 49 The Laboratory) this is not working.
However, I guess that this is just another bug.
Maybe this is already fixed in the latest version (2.5.1) but I can't use these updates, as there are other issues I get with the 2.5.1/2.6.1 updates.