Reply to Launch=abort stealth

Im running traktor, an audio 8 dj, a launch pad, and a numark stealth controller. i plug my launchpad and my stealth into a hub. For some odd reason my stealth controller gets canceled out by my launchpad. Does any have any i deal how to combat this problem. I was gonna go the firewire to usb route on the audio 8 and plug everything else in to USB but I'm not sure if it would even recognize the audio 8. Another route was to program everything on the launchpad to channel two but for some odd reason i cant get traktor to recognize the inputs any help would be greatly appreciated.
FYI: I don't use katapult and i a mac