Index: uberpos.module
===================================================================
--- uberpos.module	(revision 84)
+++ uberpos.module	(working copy)
@@ -351,7 +351,9 @@
   }
   elseif ($op == 'load') {
     $additions = db_fetch_array(db_query('SELECT cashier, completed FROM {up_orders} WHERE order_id = %d', $order->order_id));
-    $order = (object) array_merge((array) $order, $additions);
+    if (!empty($additions)) {
+      $order = (object) array_merge((array) $order, $additions);
+    }
   }
 }