Please change the example url on each blog settings page - it shows the example formula as yourdomain.com/b/slug - this is WRONG - Ive told support 100 times but they say the devs refuse to change it so Im coming here instead. This is a typo - the correct exmaple formula is yourdomain.com/blog/b/slug. Ive had two clients using the example and having 404 errors :(