Bugfix for empty current attraction points

src/de/tud/kom/p2psim/impl/topology/movement/modularosm/transition/InAreaRoamingTransitionStrategy.java

@@ -109,7 +109,7 @@ public class InAreaRoamingTransitionStrategy extends AbstractAttractionBasedTran
 			AttractionPoint currentAttractionPoint = this.assignments.get(comp);
 			
 			// if the attraction point was removed in the meantime, go directly to transit state
-			if(!IAttractionGenerator.attractionPoints.contains(currentAttractionPoint)) {				
+			if(currentAttractionPoint == null || !IAttractionGenerator.attractionPoints.contains(currentAttractionPoint)) {				
 				this.addComponent(comp);
 			}
 			else {