Forums / Cotonti / Core Labs / Ideas / Enhanced .htaccess

Removing the starting slash should fix that, but if you then use rewriterules to create virtual subdirectories (for categories for example), the errordocuments won't work correctly. Best solution is to either use an absolute url to the errordocument or use /folder/folder/message.php
The starting slash ensures the path is defined from the root of the domain rather than the current url path.