I changed all the permissions to 777 but when I go to:

http://hostname/store/zc_install/index.php

where my store resides I get this error?

Warning: require(includes/languages//index.php) [function.require]: failed to open stream: No such file or directory in (path) on line 42

Fatal error: require() [function.require]: Failed opening required 'includes/languages//index.php' (include_path='.:/usr/local/php5/lib/php') in (path) on line 42