I also have the same problem on my site on this page.
In my case the Tabs didn’t work anymore after installing the YOP Poll plugin. Really strange. If I deactivate YOP Poll the Tabs are working again. I did ask for support already to both plugin makers but I haven no response yet.
It must be something which can be solved easily I hope. I like both plugins very much.
Maybe I get a solution it will also work for you. We will see!
