Fatal Error on Apache2/mod_fcgid PHP 5.3

After activating the plugin the error 500 occured.
This is the error log:

mod_fcgid: stderr: PHP Fatal error: Call to undefined function get_current_screen() in /var/www/.../wp-content/plugins/snitch/inc/snitch_cpt.class.php on line 275

http://wordpress.org/extend/plugins/snitch/