Okay, so I've had a 4GB MS Pro Duo for a couple months now, but when I turned on my PSP just now it said that the memory stick couldn't be read. I can't format it in the PSP, and my computer is only reading it as 1.94 gb. Every time I try to format it, it fails. I can get the card replaced by the website I bought it from, but is there any way to fix this? Oh, and Warning: Spoilers inside! I know it's a fake, but the full 4GB is there. I've used it all before with no problems.