Amazing, I had to switch to the default theme to get things working again.
I have the same problem. For me, this is caused by the following line:
<script type="text/javascript" src="http://meanderend.dixis.com//ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js?ver=3.2.1"></script>
It adds my root-url to the jquery url. Not sure how I should fix this.
