I was running mine, V3>spdif>MT 24/48. I format my card after each show.I rip the shows to my laptop after each show, so my CF had been formatted about 8 times. Definately no Operator error on my end. It was running until the last encore, and it was froze up then. It said 1:45, and it was frozen up. I had to power it down for anything to work. I had the Juicebox running it off a Walmart battery, which I estimate had 10 hours left on it. The day before The show was longer, and everything went great.