Index: trunk/kernel/include/itemtypes.php
===================================================================
diff -u -r4594 -r4895
--- trunk/kernel/include/itemtypes.php	(.../itemtypes.php)	(revision 4594)
+++ trunk/kernel/include/itemtypes.php	(.../itemtypes.php)	(revision 4895)
@@ -82,7 +82,7 @@
     {
         $t = $this->SourceTable;
         $m = GetTablePrefix()."Modules";
-        $sql = "SELECT * FROM $t INNER JOIN $m ON ($t.Module=$m.Name) WHERE Loaded=1 ORDER BY LoadOrder WHERE PrimaryItem=1";
+        $sql = "SELECT * FROM $t INNER JOIN $m ON ($t.Module=$m.Name) WHERE Loaded=1 ORDER BY LoadOrder WHERE PrimaryItem=1 AND LENGTH(".$t.".ClassName) > 0";
         $this->Query_Item($sql);
     }