After the update 2.6 to 2.8.1 addresses

videos.myweb.com / upload /
videos.myweb.com / login /

does not work, but addresses

videos.myweb.com / tag /
videos.myweb.com / recent /

works.

J "I changed the. Htaccess for subdomain and uploaded all the files in binary.

An idea?

Thank you in advance