diff --git a/src/applications/dashboard/engine/PhabricatorDashboardPanelRenderingEngine.php b/src/applications/dashboard/engine/PhabricatorDashboardPanelRenderingEngine.php
--- a/src/applications/dashboard/engine/PhabricatorDashboardPanelRenderingEngine.php
+++ b/src/applications/dashboard/engine/PhabricatorDashboardPanelRenderingEngine.php
@@ -329,9 +329,16 @@
     $actions = array();
 
     if ($panel) {
-      $panel_actions = $panel->newHeaderEditActions(
-        $viewer,
-        $context_phid);
+      try {
+        $panel_actions = $panel->newHeaderEditActions(
+          $viewer,
+          $context_phid);
+      } catch (Exception $ex) {
+        $error_action = id(new PhabricatorActionView())
+          ->setIcon('fa-exclamation-triangle red')
+          ->setName(pht('<Rendering Exception>'));
+        $panel_actions[] = $error_action;
+      }
 
       if ($panel_actions) {
         foreach ($panel_actions as $panel_action) {
diff --git a/src/applications/differential/query/DifferentialChangesetSearchEngine.php b/src/applications/differential/query/DifferentialChangesetSearchEngine.php
--- a/src/applications/differential/query/DifferentialChangesetSearchEngine.php
+++ b/src/applications/differential/query/DifferentialChangesetSearchEngine.php
@@ -22,6 +22,10 @@
     return 'PhabricatorDifferentialApplication';
   }
 
+  public function canUseInPanelContext() {
+    return false;
+  }
+
   public function newQuery() {
     $query = id(new DifferentialChangesetQuery());