The path was empty indeed. This happened after upgrading and after visiting the configuration page and click save while changing no paths at all. Maybe the wrong value is read-back from the database. It had solved my problem regarding the wrapping. Many thanks guys really appreciated.

Hi when I look at my webpage http://ntpro.nl/blog the text is wrapping around the image but when I select an individual post the text isn't wrapped anymore. There's also a strange white line appearing above my header image. In the editor the text looks OK. My second problem is that I can't get Light...