yesterday it works but today it don´t still work. Can someone say me what could be the problem. I don´t install new extension and all setting are one by one like the demo package.
Now I found the reason. I deactivate K2 and now it works again. I dont´t use only the K2 tools and so I can live with this. Not really a solution but for my it´s ok.
I would need to see a live site with this problem to compare the code, but I think it could be a module class suffix missing. This module shoudl use: "nsp clear light header nomargin"