Hello,
First of all I would like to thank for including my app to the new release of Duplex !
I didn’t have many time these last days to try to add some features to Duplex. Moreover my Ohm64 has a problem and I need to send it back for repair.
To replace it in the meantime, I have received an APC40 today 
And I have noticed that the mapping of APC40 was not corrected if I refer to a previous thread and to the post of Satobox (Need Help Setting Up Duplex And Apc40).
So in attachment you can find the APC40 XML mapping file corrected.
Best Regards,
PS: hum… it’s pity that the XRNX project use SVN as versioning tool. I really like SVN but I think that Git is far more better. (it’s just a thought from a developer)