CRM PCUI custom tab does not work on Accounts

Hi,

I have created some custom fields using EEWB in BP. I wanted to create a new tab and add these fields to this new tab. I created a tab in Accounts application, added a field group containing custom fields to the tab. Generated layout for the field group.

I can see the tab on the Accounts, BUT when I click on the tab, I get an error 'page can not be displayed'.

I have created custom tabs on Opportunity application and I am well aware of the custom tab creation process. On accounts application, I followed same steps but for some reason custom tab is not working.

Any idea gurus?