Hello, I have a 128GB SDHC card, I've been trying to download SMTIV from the eShop but when download is complete, I get an error that says that the game data is corrupted and I need to redownload the game. So after playing with the files for a very long time (copying and pasting between cards) I managed to get SMTIV to work on the card, but now copying Paper Mario gives me the error and I can't even start downloading the game from the eShop. After attempting to download the game from eShop I am surprised by a 250GB corrupted data file with a gibberish name that renders my SD card useless because I need to format the card in order for it to be functional again. So is it from the horrible 3DS system? Or is it from the SD card? Is this fixable? Or do I have to buy a new card or something. SD card info: Brand: ADATA Capacity: 128GB Type: SDHC (not XC) Class: 10 (its no way near the speed of class 10, its VERY slow, transfer rate is 4mb/s) From: Ebay for 30$, which makes me suspect that the main reason for all this mess. TL;DR: After a certain threshold (I think) when I attempt to download from eShop, sometimes it will generate garbage data with a massive size, and/or won't allow me to download games into the card. I want to know what is causing this. P.S Is there a way to conveniently copy a game from one SD card to another? I've looked over the net but the way the 3DS system works is just retarded. Thanks and sorry for the long post!