I purchased a FBV Express MKII for my Spider IV 15 so I wouldn't have to go to my amp to change channels. I figured it would be as simple as just using the provided CAT-5 cable to connect the Pedal to the amp. When this didn't work I went through the process of calibrating it at least ten times. The calibration process worked. It went from 1 to 4 and all seven lights lit up. I unplugged it from the amp and reconnected it only to have it do nothing. I spent about an hour trying to find a USB cable to connect it to the computer to use the Line 6 Monkey to update it only to have it be fully updated. I preformed a factory reset just to be safe. I re-calibrated it to the amp and still nothing. So I then used the Line 6 FBV Control to program the pedal only to still have it not function with the amp. Does anybody know how to fix this?