From WikiTemp, the GBAtemp wiki

Four Swords (US) doesn't work under any setting!

Sonic Gems NTSC gives DRE and won't recognize memory card

Topik.

As soon as a game is entered, I get a DRE, and it keeps reporting the memory card as damaged (it's not).

This is in both 1:1 and Multi. It's not just my copy, it's the only one on the internet that I could find (by Starcube). Of course, it might not be a true 1:1. From the nfo: "Ready to play, because of the memory allocations and multiple boot files... the game will not work with the regular loaders, so users that plays backups with PSO exploit or any other exploit..."