This message is coming from your web server rather than from Thyme. Your web server probably denies "PUT" requests - the request method used by programs to publish calendars.

To correct this:

1. Rename remote/htaccess-php-cgi.txt in Thyme's folder to remote/.htaccess
2. Append the following text to remote/.htaccess
   
   

   <Limit PUT>
      Order allow,deny
      Allow from all
   </Limit>
   

Depending on your web host's configuration, this may not work. If it does not, please rename the .htaccess file to htaccess.old and contact support (using the Contact Us link to the left).