diff --git a/airtime_mvc/application/models/Preference.php b/airtime_mvc/application/models/Preference.php
index 27d343800..c873ea88f 100644
--- a/airtime_mvc/application/models/Preference.php
+++ b/airtime_mvc/application/models/Preference.php
@@ -1313,7 +1313,12 @@ class Application_Model_Preference
         }
 
         $ds = unserialize($v);
-
+        
+        
+        if (is_null($ds) || !is_array($ds)) {
+            return $id;
+        }
+        
         if (!array_key_exists('ColReorder', $ds)) {
             return $id;
         }