MPC hissy fit when connected to iConnectivity MioXL

Hi, just wondering if anyone may have a solution here. I have some h/w synths connected to an iConnectivity MioXL router which works fine under most circumstances. However, when connecting the MioXL to my MPC One (direct via USB) the MPC momentarily freezes, then works, then freezes again etc etc. It's impossible to record any midi from my keyboards as it freezes up completely at that point requiring a reboot. It'll even stutter if I try to record some sounds onboard the MPC. But if I unplug the USB everything is fine. I've tried switching cables. Same problem. Aargh!

Solved! The routing on the MioXL was screwed up. Doh.

The mioXL should really have some automatic loop detection.