When I press the reset button and only while a game is open, I get the "OS init" message but then a blank screen instead of my files. Enabling the Reset to Game option functions normally, however. It should be noted that before this, I got stuck on the OS init screen, but that was fixed by formatting the SD card, deleting a stray Soccer ROM in the EDFC folder of my Dropbox backup and copying all the files back over to the card. When I put it back in, this error happened.
Edit: Just reformatted the SD card and I initially got error 63 when trying to enter the EDFC file. Reset it, tried again and it works normally but the restart glitch is still present.