I recently had an issue with my R-07 with a card that I had used in that deck for a long time. First, I got a message that the card could not be seen. I reformatted and then had a message upon starting to record that the card was too slow. It was a class 10 card I had used in the deck for years and sure enough it was skipping when I replayed that recording. I had a backup deck, so nothing lost, and the R-07 was fine using it for the 2nd set and the next night as I was on the road. I did upon return home, replace the card though with a new card and why the issue was a mystery, but it was the card and deck not liking each other. Was it seated slightly off? Are the contacts slightly worn on the card or in the deck? Only time will tell, but it happened only once but that was enough to take steps.