Crashed twice on me now (other players stop moving, and the game stops responding to input). IndexSizeError: Index or size is negative or greater than the allo

Crashed twice on me now (other players stop moving, and the game stops responding to input). IndexSizeError: Index or size is negative or greater than the allowed amount Somewhere on line 18 of client_out.js, which is probably not very helpful because the source is minified.