Index: /trunk/src/org/openstreetmap/josm/actions/downloadtasks/DownloadReferrersTask.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/actions/downloadtasks/DownloadReferrersTask.java	(revision 16404)
+++ /trunk/src/org/openstreetmap/josm/actions/downloadtasks/DownloadReferrersTask.java	(revision 16405)
@@ -111,5 +111,9 @@
             return;
         if (lastException != null) {
-            ExceptionUtil.explainException(lastException);
+            JOptionPane.showMessageDialog(
+                    MainApplication.getMainFrame(),
+                    ExceptionUtil.explainException(lastException),
+                    tr("Error"),
+                    JOptionPane.ERROR_MESSAGE);
             return;
         }