PSA: Dungeon Hunter Alliance Invite Bug
If you are like me and have been playing Dungeon Hunter Alliance, you may have noticed that trying to invite a friend into your game is pretty much impossible. The game will error out with a message about the game not existing.
There is a work-around that seems to fix the problem, at least until the developers patch a fix into the game. The process for joining a game is detailed here on the Gameloft forums, but basically the player accepting the invite needs to spam the X button after they chose their character.
I have tried this out and it works, so hopefully that helps anyone out there who has been stuck playing single player.