Index: src/org/openstreetmap/josm/actions/mapmode/MoveAction.java
===================================================================
--- src/org/openstreetmap/josm/actions/mapmode/MoveAction.java	(revision 95)
+++ src/org/openstreetmap/josm/actions/mapmode/MoveAction.java	(revision 96)
@@ -95,5 +95,5 @@
 		}
 		
-		Command c = mv.editLayer().commands.getLast();
+		Command c = !mv.editLayer().commands.isEmpty() ? mv.editLayer().commands.getLast() : null;
 		if (c instanceof MoveCommand && affectedNodes.equals(((MoveCommand)c).objects))
 			((MoveCommand)c).moveAgain(dx,dy);