PHP event calendar

[Hogo]

Buenas, necesito un calendario que maneje calendarios con eventos y he encontrado este, eventcalendar, sin embargo, nada mas instalarlo ya da errores.

Los errores que da son los siguientes;

Código:

Warning: main(cl_files/calendar.php): failed to open stream: No such file or directory in /var/www/vhost/dominio.com/home/html/event_calendar/cl_files/index.php on line 25

Warning: main(cl_files/calendar.php): failed to open stream: No such file or directory in /var/www/vhost/dominio.com/home/html/event_calendar/cl_files/index.php on line 25

Warning: main(): Failed opening 'cl_files/calendar.php' for inclusion (include_path='.:/usr/share/pear') in /var/www/vhost/dominio.com/home/html/event_calendar/cl_files/index.php on line 25

Fatal error: Call to undefined function: read_data() in /var/www/vhost/dominio.com/home/html/event_calendar/cl_files/index.php on line 27

El calendario se puede bajar de aquí, no he encontrado nada que me sirva para solicionar el problema en su web.

link: softcomplex . com / products / php_event_calendar