I am banging my head against the wall. So we are taking over a website as their current agency is not really looking after the site. The site is a WPMU site with the main site at www.domain.com and one other site at www.domain.com/advice/ WP was at 3.0.1 ( I know a real joke ) and I upgraded it to the latest 3.9.1 version but now the second site doesn't work. I always get a 404 and the title of the page is Nothing found for Advice but then gets redirected to the www.domain.com Now I have checked htacess and wp-config files and they are fine. Next I have installed the rewrite rule inspector and checked the url the result was (.?.+?)(/[0-9]+)?/?$index.php?pagename=$matches[1]&page=$matches[2]page So it is actually looking for the professionals page which doesn't exist. Does anyone have any idea what else I could be doing wrong. PS. I did reset the permalinks already Thanks for any advice
after a lot of research and testing I came to the conclusion that the 2 versions ( 3.0.1 and 3.9.1 ) are just to different and it just won't work.