Data Highlighter doesn't show page

[RuudHeijnen]

We have an event related website http://www.sbo.nl so i wanted to use data highlighter because most of our event pages are the same. But data highlighter doesn't show those pages, I will see only an empty page.

For example http://www.sbo.nl/veiligheid/brandveiligheid-gebouwen/

Does someone of you understand what is going on. Data highlighter does show the homepage.

I am thinking it is maybe because of tabbed browsing, or the chat function in that page.

Hope someone can help. You can see a screenshot of Data Highlighter http://www.clipular.com/c?6659030=2X2gQv4O8_9RzcZ1Hk_7xGtCPYo&f=d40975c80bdd11dc357f050cafa73a80

I hope someone can help because i am lost

Cheers Ruud