Index: applications/editors/josm/plugins/reltoolbox/src/relcontext/RelContextDialog.java
===================================================================
--- applications/editors/josm/plugins/reltoolbox/src/relcontext/RelContextDialog.java	(revision 34787)
+++ applications/editors/josm/plugins/reltoolbox/src/relcontext/RelContextDialog.java	(revision 34788)
@@ -438,4 +438,5 @@
         createRelationAction.destroy();
         addRemoveMemberAction.destroy();
+        MainApplication.getLayerManager().removeActiveLayerChangeListener(chosenRelation);
         super.destroy();
     }