Error while choosing materials from a catalog

Hi

I am trying to choose materials from a catalog in the shop transaction.

When I click/choose the catalog it gives me the following error

Business Server Page (BSP) error

Exception Class CX_FQDN

Error Name

Program CX_FQDN=======================CP

Include CX_FQDN=======================CM002

ABAP Class CX_FQDN

Method CHECK

Line 10

Can anybody let me know what is to be done