Crashes When Opening Scenes Where A Cloner is a Child of Chamfer Maker R15

Recieved one report via cgtalk (http://forums.cgsociety.org/showpost.php?p=7678420&postcount=6) of a crash when opening old scenes where a Cloner object is a child of Chamfer Maker R15.

Waiting for user input: I have asked for a sample scene showing the problem.
