So i've been using my R4 (old broken spring version) on my DSlite, and using the original firmware with YSMenu sometimes and sometimes not, depending on what games and cheats I need to access. I can run recent games just fine (RC Soccer Hooligans)on it so I haven't switched over to the Wood fw yet. Anywho, I loaded up Zelda: Spirit Tracks for the first time under YSMenu. It asked to create a save bookmark like usual, so I clicked OK...loaded for a bit, and then popped up "save file corrupted..etc". I couldn't do much else so I turned off the DS and turned it back on. The R4 goes to load and I instantly get a black screen with "R4 can't find DS_MENU.DAT" and that's it. I took the SD card and popped it in my PC and EVERYTHING on it is gone.....WTF?!? I looked up and heard that Tracks can mess up your save once you're in the game but have it completely wipe my SD card? I mean there is NOTHING left on there according to my PC. No games/saves/folders/text docs....nothing. Showing Just under 2 GB free space on a 2GB card. I haven't seen anyone else have this problem. I guess this wasn't a patched Tracks, and instead the clean one. I haven't tried formatting because i'm hoping it's a mistake. I didn't know the R4 could format an SD card on it's own. But then again my PC is showing that the card is blank now so I think i'm SOL. Is it possible my R4 or SD card is damaged/broken? Are there other games that have been known to do this?? My EZ 3in1 slot 2 is working fine so I know the DS is ok.