Hi !
Thank you for your help ! I did a mistake in the hardware midi configuration, now all channels are working after I made a factory reset.
One problem is still happening : if I play long midi notes from my midi controller, it sounds ok, but for no reason, in a ableton midi clip, the virus does not play the whole note, like something is cutting the midi signal so it plays shorter notes. If I turn it off and on, the virus plays the long notes and few minutes later it is the same, long notes are randomly cut...
Same thing if the midi clip contains 2 long notes playing one after the other, with no silence inbetween the second note is not played.
I thought my midi usb adapter was crap but I have the same issue with the usb cable
Any idea ?