Index: src/relcontext/RelContextDialog.java
===================================================================
--- src/relcontext/RelContextDialog.java	(revision 34785)
+++ src/relcontext/RelContextDialog.java	(working copy)
@@ -437,6 +437,7 @@
         createMultipolygonAction.destroy();
         createRelationAction.destroy();
         addRemoveMemberAction.destroy();
+        MainApplication.getLayerManager().removeActiveLayerChangeListener(chosenRelation);
         super.destroy();
     }