Mantra setting page don't work

Hi guys,

at first: thanks for this wonderful theme. The possibilities of customization are great.

Now, i’ve got a problem: The Mantra Settings page don’t work anymore. Every Option like “header settings” is displayed – but i can’t click on it. Every menu point is text only, there are no links. So i can’t get deeper into the options and change any settings.

I’ve already cleaned up the browser cache. And i’ve used different browsers (Chrome, Firefox), but the problem is still there.

Thanks for your help