CDJ 850 With Traktor, pleeeaseeee help!!

Basically I've read over the set up guide so many times.. feel like I've done everything. Connected my CDJ 850s to my computer via USB, added mapping etc.. created an aggregate device using software from pioneer website. Selected this new aggregate device for audio device in tractor preferences.. but when i go to choose output routing for the decks the cdj doesn't show up.. it only says front left, front right. Every problem someones had that I've read on forums seem to have the CDJs come up at this step.. What am I doing wrong? The CDJs don't control anything in tractor at all like its not receiving any signal but shows on the 'in port'. Please help.. really would like to get this issue resolved. Thanks!!