Add Approver functionality is not working after support pack

Dear Experts,

When user is trying to add New Approver using Add approver button while creating the shopping cart,error comes saying u201CNo possible processor found for approval task. Inform System Admin.u201D.

We are BBP_CRM 4.0. Recently we have upgraded to support pack level 11 from 4.

In previous support pack level, it was working fine where we were able to add approver and reviewer.

Bu after upgradation of support pack, this functionality of adding

approver is not working. user is able to see the Add approval button.When user clicks on approver button, system insert two new node for adding approver. if user try to insert approver saying double click, message comes saying "No possible processor found for approval task.Inform System Admin".

Please help.

Regards,

SVS