I have a problem with my amp and pedal combination. I have a line 6 spider iv 150w and a brand new fbv mkii shortboard. The amp works perfectly when it's not plugged into the short-board and will do everything as expected. Once I plug in the short board I find the amp rebooting or shorting or something. It turns off for a second or two and then turns back on. I then tried plugging the short board into my old spider iv 15w and it worked without cutting the amp. I downloaded line 6 monkey and updated both the short board and the amp (and the amp didn't reboot while the shortbread was plugged into both it and the laptop). I tried swapping the cable between the fbv and the amp and that changed nothing. Not sure what to do now.