mine is working.. "sdcard\sx os\titles\(US TW3 ID)\romfs\content\content0\gameplay\abilities\gersalt_stats.xml"
I use over 9000 weight and health regen mods also using SX OS 2.9.4 Beta and FW 9.2 plus TW3 3.6.. I just started to play this game.
@Xdqwerty, You do realise that just about any SD card formatted to FAT32 should work with the DSi. I think, 16GB or 32 is about enough to load all of your games.