Index: trunk/src/org/openstreetmap/josm/actions/FollowLineAction.java
===================================================================
--- trunk/src/org/openstreetmap/josm/actions/FollowLineAction.java	(revision 4110)
+++ trunk/src/org/openstreetmap/josm/actions/FollowLineAction.java	(revision 4111)
@@ -69,4 +69,6 @@
         
         Node last = ((DrawAction) Main.map.mapMode).getCurrentBaseNode();
+        if (last == null)
+            return;
         Way follower = selectedLines.iterator().next();
         Node prev = follower.getNode(1);