it compiles, that's better than it not compiling, right?

code/modules/events/ghost_role.dm

@@ -27,7 +27,7 @@
 		var/waittime = 300 * (2^retry)
 		message_admins("The event will not spawn a [role_name] until certain \
 			conditions are met. Waiting [waittime/10]s and then retrying.")
-		addtimer(CALLBACK(src, .proc/try_spawning, 0, ++retry), waittime)
+		addtimer(CALLBACK(src,PROC_REF(try_spawning), 0, ++retry), waittime)
 		return
 
 	if(status == MAP_ERROR)