Anyone else got this:

############################################################################################
FATAL ERROR in
action number 1
of Step Event0
for object obj_localPlayer:

(null) argument 1 incorrect type (unknown) expecting a Number (YYGI32)
############################################################################################
--------------------------------------------------------------------------------------------
called from - gml_Object_obj_localPlayer_Step_0 (line 25)

Yeah at first i tried to join while i was playing but then it crashed again (after i restarted the game) when i try to join from the main menu.