Duplex Beta Versions

Hi danoise! after our talk in this topic: Midi On Multiple Renoise Instances
I have tried the triplestack midi-keyboard. besides that my problem with opening midi ports on the second Renoise instance isn’t solved with this, I don’t get any sound out of it.
this is what I do and see:

-Load an instument and checked if it makes sound
-load up duplex midi keyboard and set my midi ports up
now I can see the graphical keys correspond with what I press at my controller but it doesn’t sent it to the assigned or with ‘follow selection’ selected instrument.
I tried with a VSTi and with a sample. Am I missing something?