"You have left the world"... uh no i didnt(?)

[tok1m]

why do i keep getting these msgs? and the game just quits... damn...

[SpacemanSpiff]

It's most likely a server side crash. All beta testers post it in the beta forums - the devs are trying to take care of all these crashes to the best of their abilities (which are all superb). Follow the beta news instructions about sending your crash log into the devs... they need them to fix all of these problems.