Really now, feel free to make an no banlist code.
The online service has a built-in hack detection so that you will get disconnected if you try to play a game with banned cards or a deck that's less than 40 or greater than 60 cards. It was like this in 2010, and they have no reason to change it now (the only way to test it is to make the code first though). Sadly, the instant-win code is not blocked online so I never play online matches anyways.
Therefore, since the no banlist code would only benefit offline play, I would humbly request any hacker to make it.
On a side note, to those with problems even on AKAIO 1.8.5a: have you tried deleting your old save file?