anchor.diff:  
   	//Generate the gas_mixture for use in txhis zone by using the average of the gases
   	//defined at startup.
  -	air = new
  +	//Changed to try and find the source of the error.
  +	air = new /datum/gas_mixture/zone()
   	air.group_multiplier = contents.len
   	for(var/turf/simulated/T in contents)
   		if(!T.air)
  
positive.code: 	var/interactions_with_unsim = 0
  	var/progress = "nothing"
  
  
  //CREATION AND DELETION
  /zone/New(turf/start)
  
negative.code: 		return
  
  	if(!unsim_air_needs_update && air_unsim) //if air_unsim doesn't exist, we need to create it even if we don't need an update.
  		return
  
  	//Tempfix.
  	if(!air)
  		return
  
  	unsim_air_needs_update = 0
  