I recently dusted off my Wii and got back into playing it. I've never actually played New Super Mario Bros. Wii before, so I thought I'd give that a go. However, my backup won't boot. It shows up fine in the disc channel, but after I press play it almost immediately comes up with a message saying 'An error has occurred' and tells me to remove the disc and restart the Wii. All other backups are currently playing fine. I have a PAL Wii that was bought in earlier 2007 and modded with an original Wiikey. The system software is up to date at 4.3E. Until I went to play NSMB the Wiikey's firmware was on 1.9s - which was the latest last time I played my Wii regularly. I realised that, since then, a new version has been released - 1.99beta - which adds support for NSMB, so I thought that was the problem. However, after updating the Wiikey's firmware, the NSMB backup still doesn't work, just gives the 'An error has occurred' message. From what I've read, including on this forum here - http://gbatemp.net/threads/new-super-mario-bros-wii.189802/ I should have no problem booting a backup of NSMB using a Wiikey if the modchip's firmware is up to date. So what could be the problem? If it makes any difference, I have also softmodded the Wii to add the Homebrew Channel, although I haven't really ever used that or anything else enabled by softmodding - I mostly just run DVD game backups. But could anything I've done during the softmodding process have stopped NSMB from working? Any help would be much appreciated!