only 1 timecoded vinyl is detected

hey
need help i bought the mixvibes maya44 package and for some reason everytime i set everything up my PC always says that only one deck is connected in the (wizard thingy) it asks you which inputs are plug in 1 and 2 and in the 2 it says no conneted
i ve tried plug in 1 with each deck and they work fine
i ve reeinstalled mixvibes but i still have the same probleme
can someone tell me if its a problem with the set up anf if so where (i ve gone througt everything at least 5 times) or is it a problem with the maya44 USB
thanx in advance
need help i bought the mixvibes maya44 package and for some reason everytime i set everything up my PC always says that only one deck is connected in the (wizard thingy) it asks you which inputs are plug in 1 and 2 and in the 2 it says no conneted
i ve tried plug in 1 with each deck and they work fine
i ve reeinstalled mixvibes but i still have the same probleme
can someone tell me if its a problem with the set up anf if so where (i ve gone througt everything at least 5 times) or is it a problem with the maya44 USB
thanx in advance