The Dutch book stores page is misbehaving. There is no list given, instead the page is overwritten by a number of error messages like the one below. Does someone know what might be the problem?
Andre Engels
Warning: Cannot add header information - headers already sent by (output started at /usr/local/apache/htdocs-nl/w/SpecialBooksources.php:37) in /usr/local/apache/htdocs-nl/w/OutputPage.php on line 225