My save states vanished

[[Unknown]]

Well, you can search all files for "*.ppst" using Windows or Mac search, to see if they're anywhere. Did you use ingame saves? Those would be under PSP, then SAVEDATA. It's better to use those than savestates, they can be safer.

The latest git builds, which will soon be released as a new stable version, largely handle the situation better and more safely. v0.9.9.1 (current stable version) was released several months ago before these updates were made.

Backups are always a good idea. I once lost a lot of savedata I had on a 32x PS1 memory stick. I didn't have any other copies... been paranoid ever since.

-[Unknown]