hey all, i would like to ask you something about SMT as I am trying to build a custom page through SMT(site management tool). I have successfully created a custom page by following these steps  1- login into SMT 2-overview mode 3-pages subtab 4-new page 5-save but when I am trying to edit these pages, I found nothing in the add content session.  I have also tried to make content type "active" through custom content types but I found nothing in "inactive" as well as "active" contents  kindly help me to figure out where i am wrong! Attached is a screenshot of my empty custom content type

check if you have installed the bundle that includes the CMS contents