Creating the page helped me with the same problem.
ryanduff, please point me to the topic you are referring to about theme authors not creating all necessary pages.
— edited 8:16pm —
Yes, it points back to themes with incomplete pages. Unless the template creator heavily studied the original template format and catched all possible outputs then it is even possible to have only page as a template. But, templates are meant to be composed of several pages to accomodate different outputs. You can blame it on them if you have done your part in following the “WordPress Code/Coding Standard”.
Firas, if it did not solve the problem for you, try to check if you have a page.php inside the template folder. If a page.php does not exist, you’d have to create one. One that is compatible with the template you are using.
