I installed wordpress multisite on my existing wordpress-run site. When I tried to make a new site in the network, everything appears to work... until I navigate to either it or its wp admin dashboard and I only get 404 errors.
I was told to check the permissions on my .htaccess file (one that wasn't auto-generated, I had to create it a while back) after trying to edit permissions, Filezilla (my ftp client) responded with "500 'SITE CHMOD 744 .htaccess': command not understood."
What can I do to get these sites up and running? could there be something wrong with my .htaccess that is causing this?