Yeah solving some bugs can drive ya crazy trying to get to the bottom of them.
just from my experience with udk and what i saw on this error. right before it happened those 2 button on the bottom of the screen should have popped up but enstead it was the error box that popped up. I think i would just take a quick look into the code that throws those 2 buttons onto the screen. I’m thinking the error has something to do with that. question i’m asking is why did those 2 buttons not show up to join the game or exit it.