I apologize for the delay, but it appears everything is in order now. We had a number of hurdles to jump that were out of my hands and required vBulletin support, as well as host support.
For the time being, the Arcade has been disabled (but not deleted), as it was causing a major conflict in the upgrade. I will need to determine the exact steps to re-adding it, and if it can be done without losing all the high scores or not. I'll keep you all posted there.