Ciao.
Cosa c'è di sbagliato in queste rules

RewriteEngine On
RewriteRule ^/?(home|new-ticket|tickets-list)/ index.php?a=$1 [L]
RewriteRule ^/?(home|new-ticket|tickets-list)/([0-9]+)/ index.php?a=$1&tid=$2 [L]

URL

http://www.mysite.com/new-ticket/ OK
http://www.mysite.com/new-ticket/14/ non va



Grazie