User blog comment:TheDeadDragon/Monster Hunter Portable 3rd saving problem/@comment-5043481-20130113101805

What EXACTLY does it say. You havn't given us much to work on. But I suppose as it's in japanese writing here what it said could be hard.

Some checks.

Memory stick - do you have one. It may have fallen out or moved inside the PSP. Or something. But that's the simplest problem, so check that first.

You could have run out of room on the stick. Might have to delete some stuff.

If neither of those work it is beyond my expertise. Which in computers is not much.