I have experience with my t3 blank. When I go to Layout Tab on the T3 Blank manager, I can't find any layout setting. Please see the attachment for the reference. I am using iPage hosting.
Thanks & Kindest Regards
You did any customization with the layout or it happens with the default installation?
You can pm me your site url, admin account, I will try to detect in your site. Normally this is caused by permission, or some wrong code in the layout file.
Seems you are using template from other template club. This issue belongs to Template, not Framework so please ask for help from the template provider.
The layout is loaded from front-page and here is the link: http://demo.citythemez.net/cityporto/?t3action=layout&t3task=display&t3tp=layout&styleid=10&jvalue=home-1&_=1422611876095
The page should work like this one: http://demo.citythemez.net/cityporto/index.php?t3action=layout&t3task=display&t3tp=layout&styleid=10&jvalue=home-1&_=1422611876095
But somehow the link is not working properly then the layout in your back-end doesn't work as expect. Please check your server config.