Scenario:

· Click on the filter icon to enable filtering on every column

· Click on any column filter

· Click on Custom Filter

· Select Equals as the option

Issue:

– “There was an error processing your request” error is displayed

Resolution:

In our case we found & needs to be removed from option set text as per below community link: http://community.dynamics.com/crm/f/117/t/120944.aspx