Index: applications/editors/josm/plugins/ext_tools/src/ext_tools/DataSetToCmd.java
===================================================================
--- applications/editors/josm/plugins/ext_tools/src/ext_tools/DataSetToCmd.java	(revision 34986)
+++ applications/editors/josm/plugins/ext_tools/src/ext_tools/DataSetToCmd.java	(revision 34987)
@@ -130,5 +130,5 @@
             newNodes.add(targetNode);
         }
-        cmds.add(new ChangeNodesCommand(MainApplication.getLayerManager().getEditDataSet(), target, newNodes));
+        cmds.add(new ChangeNodesCommand(target, newNodes));
     }