I'm working on a pretty new iMac. I'm trying to set up my XR-18 as the interface in Studio One 4. When I go to song setup for IO, I see the 18 channels the XR-18 has across the top. I added 16 mono audio tracks sequentially, but when I hit the "Apply" button, all the channel assignments disappear except tracks 1 and 2 for input. Well, the tracks show, but the grid of assignments is blank. For the life of me, I cannot figure out how to get Studio One to accept the other 16 inputs. I've been through the routing on the XR-18 and watched all the setup videos. Can't figure out what I'm doing wrong.
