The theme I am using is called Air by YooTheme. After looking at their code and file structure it, they're using a framework called WARP which seems to be functioning different from regular WordPress themes.
I activated the Classified plugin and added a test classifieds ad. When I load the classifieds page a blank page shows up with no text or markups at all.
I tried copying the page-classifieds.php file to the theme root and that did not help either. When using the shortcodes for the plugin within the WordPress pages they do appear on the front end but the default Classifieds, My Classifieds pages etc do not work. They only display a blank white page.
I looked through many forums and was unable to find a solution for this. Is there something that must be done manually? I should mention that the Classifieds page displays fine when using the default Twenty Twelve Theme. Please help me to find any workable solution to this problem.