Mine was messing up recently, it thought there was no stick inside when there actually was. I had to uninstall the driver and reinstall it, and that fixed the problem right up. It’s worth a shot, hopefully it’s not a hardware problem. On my SR17K, there was a piece of lint from my pocket that stuck in the Memory Stick and got lodged in the reader, check and see if any of the reader’s pins are blocked. That’s all I can think of off the top of my head.