Layout Problem

Hi,

I have an unusual trouble with one of my themes called Finance & Business (cmsmasters).

When I am editing a post, I have an option below the editor where I can edit the post’s settings (heading, layout etc.). It is divided in 3 tabs: “Post”, “Layout” and “Heading”. By default, the “post” tab is opened. My issue is that when I try to open the other tabs “Layout” and “Heading”, it does not work.

The end of urls are:
/wp-admin/post.php?post=1559&action=edit#cmsms_post
/wp-admin/post.php?post=1559&action=edit#cmsms_layout
/wp-admin/post.php?post=1559&action=edit#cmsms_heading

But only “posts” works by default.

I hope this is quite clear, I have been using this template for a year without trouble…

Thanks for anyone’s help!