When I try to create a new post or try to edit a previous post, Categories,Tags and Comments box is not appearing on the right hand side. So i thought may be they r not selected in screen options. But when i clicked on screen options,Categories,Tags and Comments are not present in the list. Only featured image and screen layout is present in the screen options. However when i go to all posts page, and click on quick edit button of a particular post; Categories,Tags and Comments are present.
The whole issue started when i installed slideck 2 lite plugin. It added its own custom options and replaced the category,tags and comments on the edit posts page. So i deactivated and deleted the plugin but categories , tags and comments still did not appear on edit post page. I installed a fresh copy of wp-includes and wp-admin but the problem was still not resolved. Any solutions for this problem?