Thanks GMBoy. Yes, I saw your post on the Foot forum. Thanks also for the tip on Phantom Power. I'm using the FAMC wall wart power source connected to a power strip in the back of my rack. I ordered the 25 foot long 7 pin phantom power cable from FAMC. Do you think this long enough to cause the problem you describe?
By the way, to anyone considering the Liquid Foot stuff - my first impression is very good. Light-weight, sturdy, labels are easily legible from a standing position. The flexibility is vast. The manual is good, but doesn't cover the editing software at all. There is a learning curve to it, but I'm sure it's well worth it. It seems like you can program this thing to do anything. There is a one-click "Load Factory Programming for Axe FX" option as well.