When in a page or a post, none of the action buttons work. So, for example, in a post, when I write out a tag and press "Add", nothing happens. Or when I press "Add new category", nothing happens. Equally, when I click the "Add an image" button, nothing happens. Also, my SEO plugin is not working - or indeed appearing on the post/page editing page. It usually drops down from a tab, but when I click the tab, nothing appears. The only things that work are the text editor and the Publish, Save Draft and Preview buttons. Does anyone know why this is happening and how it might be fixed? I have very little technical knowledge and have no idea what could be wrong. Many thanks for your time.