Thanks very much Gene.
I’ve already localised the problem and deleated the line – but you solved it and showed me what to put instead.
So you have saved my weekend – so thanks again!
No it is using the Thematic theme.
I’m sorry, I was not that lucky. It still does not show the blog.
Thank you for your fast respons.
I updated the theme before I updated WordPress. And yes I know the interval between the updates is too long and could be the problem.
Here is a link to the functions file: http://wordpress.pastebin.ca/2247643
and to the stylesheet file: http://wordpress.pastebin.ca/2247644 from the backend editor
Hope that you can help me – and thanks again for using your time on it.