Hi

Sometimes I need to duplicate my joomla template to modify it and then assign it to a specific menu item.

But always I have problem to do it. The last time I tried to duplicate the simple template protostar for use it as landing page in some pages of my master site.

Duplication goes well, but after the assignment to the specific menu item, nothing happens. It seems not recognize the new template and show me the page assigned to it with the predefined template - like the new template (the copy of protostar) not exists.

please help me!

Can you give us a detailled procedure to reproduce it. (step by step)

Can you also precise the version of Joomla and JMS.
You mentioned "Protostar" so we suppose that you are using a Joomla 3.3 and JMS 1.3.37.

Did you shared the /templates directory or created a copy ?
If you have used default JMS template rule, can you specify which one you used to help us reproducing the behavior.

All detailed information to help us reproducing it is welcome.