CRM outlook client 'Stack Overflow at line 0'

1) Open Account Entity record from outlook client (configure for OnPremise or Online)
2) Entity form have silverlight control
3) from silverlight code I am trying to call script as
HtmlPage.Window.Eval("Xrm.Utility.openEntityForm('" + entityName + "','" + id.ToString()+"')");
Note: Xrm.Utility.openEntityForm is available after UR8
4) Script execute first time e.g. able to open Contact record thro above code from Account form
5) But second time when above script executed to open Parent i.e. Account form itself, it throws error as 'Stack Overflow at line 0'

Also if script invoked from JavaScript on form load and tried to open same record, error still persist.

Note: This happens only if entity records opened from CRM outlook client. My above silverlight code work fine for IE8.