diff --git a/src/applications/project/controller/PhabricatorProjectBoardController.php b/src/applications/project/controller/PhabricatorProjectBoardController.php
index fac78072e6..4473ee70aa 100644
--- a/src/applications/project/controller/PhabricatorProjectBoardController.php
+++ b/src/applications/project/controller/PhabricatorProjectBoardController.php
@@ -1,197 +1,199 @@
 <?php
 
 final class PhabricatorProjectBoardController
   extends PhabricatorProjectController {
 
   private $id;
 
   public function shouldAllowPublic() {
     return true;
   }
 
   public function willProcessRequest(array $data) {
     $this->id = $data['id'];
   }
 
   public function processRequest() {
     $request = $this->getRequest();
     $viewer = $request->getUser();
 
     $project = id(new PhabricatorProjectQuery())
       ->setViewer($viewer)
       ->withIDs(array($this->id))
       ->executeOne();
     if (!$project) {
       return new Aphront404Response();
     }
 
     $columns = id(new PhabricatorProjectColumnQuery())
       ->setViewer($viewer)
       ->withProjectPHIDs(array($project->getPHID()))
       ->execute();
 
     $columns = mpull($columns, null, 'getSequence');
 
     // If there's no default column, create one now.
     if (empty($columns[0])) {
       $unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
         $column = PhabricatorProjectColumn::initializeNewColumn($viewer)
           ->setSequence(0)
           ->setProjectPHID($project->getPHID())
           ->save();
         $column->attachProject($project);
         $columns[0] = $column;
       unset($unguarded);
     }
 
     ksort($columns);
 
     $tasks = id(new ManiphestTaskQuery())
       ->setViewer($viewer)
       ->withAllProjects(array($project->getPHID()))
       ->withStatus(ManiphestTaskQuery::STATUS_OPEN)
       ->setOrderBy(ManiphestTaskQuery::ORDER_PRIORITY)
       ->execute();
     $tasks = mpull($tasks, null, 'getPHID');
 
-    $edge_type = PhabricatorEdgeConfig::TYPE_OBJECT_HAS_COLUMN;
-    $edge_query = id(new PhabricatorEdgeQuery())
-      ->withSourcePHIDs(mpull($tasks, 'getPHID'))
-      ->withEdgeTypes(array($edge_type))
-      ->withDestinationPHIDs(mpull($columns, 'getPHID'));
-    $edge_query->execute();
+    if ($tasks) {
+      $edge_type = PhabricatorEdgeConfig::TYPE_OBJECT_HAS_COLUMN;
+      $edge_query = id(new PhabricatorEdgeQuery())
+        ->withSourcePHIDs(mpull($tasks, 'getPHID'))
+        ->withEdgeTypes(array($edge_type))
+        ->withDestinationPHIDs(mpull($columns, 'getPHID'));
+      $edge_query->execute();
+    }
 
     $task_map = array();
     $default_phid = $columns[0]->getPHID();
     foreach ($tasks as $task) {
       $task_phid = $task->getPHID();
       $column_phids = $edge_query->getDestinationPHIDs(array($task_phid));
 
       $column_phid = head($column_phids);
       $column_phid = nonempty($column_phid, $default_phid);
 
       $task_map[$column_phid][] = $task_phid;
     }
 
     $board_id = celerity_generate_unique_node_id();
 
     $board = id(new PHUIWorkboardView())
       ->setUser($viewer)
       ->setFluidishLayout(true)
       ->setID($board_id);
 
     $this->initBehavior(
       'project-boards',
       array(
         'boardID' => $board_id,
         'moveURI' => $this->getApplicationURI('move/'.$project->getID().'/'),
       ));
 
     foreach ($columns as $column) {
       $panel = id(new PHUIWorkpanelView())
         ->setHeader($column->getDisplayName())
         ->setHeaderColor($column->getHeaderColor())
         ->setEditURI('edit/'.$column->getID().'/');
 
       $cards = id(new PHUIObjectItemListView())
         ->setUser($viewer)
         ->setCards(true)
         ->setFlush(true)
         ->setAllowEmptyList(true)
         ->addSigil('project-column')
         ->setMetadata(
           array(
             'columnPHID' => $column->getPHID(),
           ));
       $task_phids = idx($task_map, $column->getPHID(), array());
       foreach (array_select_keys($tasks, $task_phids) as $task) {
         $cards->addItem($this->renderTaskCard($task));
       }
       $panel->setCards($cards);
 
       if (!$task_phids) {
         $cards->addClass('project-column-empty');
       }
 
       $board->addPanel($panel);
     }
 
     $crumbs = $this->buildApplicationCrumbs();
     $crumbs->addTextCrumb(
       $project->getName(),
       $this->getApplicationURI('view/'.$project->getID().'/'));
     $crumbs->addTextCrumb(pht('Board'));
 
     $can_edit = PhabricatorPolicyFilter::hasCapability(
       $viewer,
       $project,
       PhabricatorPolicyCapability::CAN_EDIT);
 
     $actions = id(new PhabricatorActionListView())
       ->setUser($viewer)
       ->addAction(
         id(new PhabricatorActionView())
           ->setName(pht('Add Column/Milestone/Sprint'))
           ->setHref($this->getApplicationURI('board/'.$this->id.'/edit/'))
           ->setIcon('create')
           ->setDisabled(!$can_edit)
           ->setWorkflow(!$can_edit));
 
     $plist = id(new PHUIPropertyListView());
     // TODO: Need this to get actions to render.
     $plist->addProperty(pht('Ignore'), pht('This Property'));
     $plist->setActionList($actions);
 
     $header = id(new PHUIObjectBoxView())
       ->setHeaderText($project->getName())
       ->addPropertyList($plist);
 
     $board_box = id(new PHUIBoxView())
       ->appendChild($board)
       ->addMargin(PHUI::MARGIN_LARGE);
 
     return $this->buildApplicationPage(
       array(
         $crumbs,
         $header,
         $board_box,
       ),
       array(
         'title' => pht('%s Board', $project->getName()),
         'device' => true,
       ));
   }
 
   private function renderTaskCard(ManiphestTask $task) {
     $request = $this->getRequest();
     $viewer = $request->getUser();
 
     $color_map = ManiphestTaskPriority::getColorMap();
     $bar_color = idx($color_map, $task->getPriority(), 'grey');
 
     // TODO: Batch this earlier on.
     $can_edit = PhabricatorPolicyFilter::hasCapability(
       $viewer,
       $task,
       PhabricatorPolicyCapability::CAN_EDIT);
 
     return id(new PHUIObjectItemView())
       ->setObjectName('T'.$task->getID())
       ->setHeader($task->getTitle())
       ->setGrippable($can_edit)
       ->setHref('/T'.$task->getID())
       ->addSigil('project-card')
       ->setMetadata(
         array(
           'objectPHID' => $task->getPHID(),
         ))
       ->addAction(
         id(new PHUIListItemView())
           ->setName(pht('Edit'))
           ->setIcon('edit')
           ->setHref('/maniphest/task/edit/'.$task->getID().'/')
           ->setWorkflow(true))
       ->setBarColor($bar_color);
   }
 
 }