garvinhicking you are right.
Before I installed s9y I have a folder thats name is "template" and while uploading s9y I forgot that directory to rename.
Now I renamed that directory and everything is OK!

Thanks for all, all guys..

I successfully installed the s9y.0.7-beta2 but when i go to my main page I have an error like below:

Warning: Failed opening '' for inclusion (include_path='/home/httpd/vhosts/domain.of.me/httpdocs/:/home/httpd/vhosts/domain.of.me/httpdocs/bundled-libs/:.:/usr/share/pear') in /home/httpd/vhosts ...