Recently purchased several Acekard2's and they have all worked great -- all of a sudden 1 of them will generate the error code 01010101 in the top screen when any file is launched. It boots into the Acekard OS fine and has worked fine up to this point. I have isolated the problem to the card (I believe). I have swapped the Acekard into multiple NDS units -- same error and have also taken the SDCARD out of the problem Acekard and put it into a different Acekard and files launch fine off of it. Anyone else see this error before or have any suggestions? I hope its somthing that can be fixed without sending it back (my 6 yr old son uses it). Thanks for any help!