Index: applications/editors/josm/plugins/FixAddresses/src/org/openstreetmap/josm/plugins/fixAddresses/gui/actions/AbstractAddressEditAction.java
===================================================================
--- applications/editors/josm/plugins/FixAddresses/src/org/openstreetmap/josm/plugins/fixAddresses/gui/actions/AbstractAddressEditAction.java	(revision 32701)
+++ applications/editors/josm/plugins/FixAddresses/src/org/openstreetmap/josm/plugins/fixAddresses/gui/actions/AbstractAddressEditAction.java	(revision 32770)
@@ -183,5 +183,7 @@
         Main.main.undoRedo.add(new SequenceCommand(txName, commands));
         commands.clear();
-        container.invalidate();
+        if (container != null) {
+            container.invalidate();
+        }
     }