A majority of games are broken with the save state feature. It will claim to create one, but report a "state load failed" error when attempting to load. It seems that the problem is that some games will create a .ss0 file on the memory card and do work, while others won't create that file and fail. All of them create a 0 byte .png and 0 byte .zs0 file, which also seems strange that they would be empty of any data. Is this typical behavior from that emulator? I tested the first few games in my list to see which ones work: 1943: success A Boy and His Blob: fail Adventures of Lolo 3: fail Archon: fail Battletoads: success Bionic Commander: fail Blaster Master: grey screen, fails to play Bubble Bobble: fail Burger Time: fail Captain America and the Avengers: fail Darkwing Duck: success Some of the games that have succeeded previously: Ghostbusters Megaman 6 Mendel Palace Rampage Teenage Mutant Ninja Turtles 3-D Battles of World Runner Zelda 2 The Adventure of Link However, running tests is ultimately pointless because I've also found that a game which succeeds at one time may fail later. I removed the save states from the succeesful games under Windows Explorer, then launched NesterJ and attempted to save state again. Zelda 2, World Runner, etc. all failed. Meanwhile Mendel Palace failed the other night, yet later succeeded. So it appears completely arbitrary, which is the worst kind of bug. I know I can rule out file permissions as a cause, since it still manages to write other files (albeit with 0 bytes), and I checked them all to ensure they weren't flagged for read-only. I also tried reformatting the memory card, as well as disabling the CFW hack to speed up memory access. But I still need to know if this is symptomatic of the emulator or isolated to my experience in order to figure out how to proceed.