Index: ps/trunk/binaries/data/mods/public/simulation/components/Formation.js
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/components/Formation.js
+++ ps/trunk/binaries/data/mods/public/simulation/components/Formation.js
@@ -165,7 +165,7 @@
 Formation.prototype.GetClosestMember = function(ent, filter)
 {
 	var cmpEntPosition = Engine.QueryInterface(ent, IID_Position);
-	if (!cmpEntPosition)
+	if (!cmpEntPosition || !cmpEntPosition.IsInWorld())
 		return INVALID_ENTITY;
 
 	var entPosition = cmpEntPosition.GetPosition2D();