I've inserted a new Scandisk 8g card (Class 10) into my jm4 looper. Hit format. Said "Formatting". Clip light comes on. Made a recording transfer properly (I think) to the card. When I transfer the card to the laptop and open the drive it says "file empty". The manual says a 1-2 gig card. Will it not properly format the 8 gig card or is something else wrong?