eventespresso / event-espresso-core

        // instantiate module class

        $module = new $module_name();

        // ensure that class is actually a module

        if (! $module instanceof EED_Module) {

            EE_Error::add_error(

                sprintf(__('The requested %s module is not of the class EED_Module.', 'event_espresso'), $module_name),

                __FILE__, __FUNCTION__, __LINE__

            );

            return null;

        }

        return $module;

    }

                                                             . $tour

                                                             . '.class.php' : $file_path;

                    //if file is STILL not readable then let's do a EE_Error so its more graceful than a fatal error.

                    if (! is_readable($file_path)) {

                        EE_Error::add_error(

                            sprintf(

                                __(

                                    'The file path given for the help tour (%s) is not a valid path.  Please check that the string you set for the help tour on this route (%s) is the correct spelling',

                                    'event_espresso'

                                ),

                                $file_path,

                    EE_Session::hash_check_prefix . $this->_sid,

                    false

                );

                if ($hash_check && $hash_check !== md5($session_data)) {

                    EE_Error::add_error(

                        sprintf(

                            __(

                                'The stored data for session %1$s failed to pass a hash check and therefore appears to be invalid.',

                                'event_espresso'

                            ),

                            EE_Session::session_id_prefix . $this->_sid

                        ),

                        __FILE__, __FUNCTION__, __LINE__

                    );

                }