Chain of effects with guitar?

Ok , I have a major problem. I had to unplug everything and move. So heres what I have and need desperate help. Of course i have a guitar. Then i have the 11 rack and a bbe rackmount All powered by a crown xls 1000. And theground control pro with a zoom multi stomp box and finally a decimator noise reduction. Once everything is powered on as soon as i turn on the bbe processor a horrible hum starts. How do i hook everything up? Thank you.

Hii

It sounds like either a ground loop issue or one of your interconnect cables to/from the bbe is bad, try plugging the bbe into a separate outlet circuit if you can..

I had a similar issue in my effects loop. A simple power conditioner fixed it. I bought a SurgeX, and it serves 2 functions: power conditioner and surge protection (not like those cheap power bars).