I have a denon Hnc 4500 contrex a few months ag

I have a denon Hhnc 4500 controller and can not get it to work with Dex 3 - I updated dex a few months ago and was just putting this system back together again. It worked fine when i had it hooked up before the update. I updated the drivers for the controller also. can anyone help? I think it is in preferences in dex 3 but have tried everything.

sounds like something you should ask the dex guys