I've been using the Acekard 2i with my DSi for a few months now without any issues. This morning when I tried to launch it, it came out with the popular 'An error has occurred. Press and hold the POWER Button to turn the system off. Please refer to the Nintendo DSi Operations Manual for details.' message. I've not applied any system updates and I'm running 1.2E, so that's fairly old. I copied over the firmware to the SD card again (4.17), but that didn't make any difference either. The SD card is fully supported and as I say, I've been running games on there for some time now. I suspected it might be the card itself or perhaps the DSi, so I put the Acekard into another DS (not a DSi) and it worked fine. The normal DS also had an Acekard 2i (even though it's just a DS, I thought I may as well as I'm likely to get another DSi in the future), so I put that into the the DSi and didn't work either and produces the same error has occurred message. This suggests something wrong with the DSi. I immediately thought this must have been because a firmware update had occurred, but when I checked it was still on 1.2E. The only thing I can think of now is somehow the Acekard on my DSi and the DSi itself isn't getting a good connection, but that seems unlikely as it works on the other one. Any ideas?