Index: applications/editors/josm/plugins/piclayer/src/org/openstreetmap/josm/plugins/piclayer/actions/GenericPicTransformAction.java
===================================================================
--- applications/editors/josm/plugins/piclayer/src/org/openstreetmap/josm/plugins/piclayer/actions/GenericPicTransformAction.java	(revision 27435)
+++ applications/editors/josm/plugins/piclayer/src/org/openstreetmap/josm/plugins/piclayer/actions/GenericPicTransformAction.java	(revision 27627)
@@ -88,5 +88,6 @@
 	    // End action
 	    isDragging = false;
-	    currentCommand.addIfChanged();
+	    if (currentCommand != null)
+	        currentCommand.addIfChanged();
 	}