webcalendar and php and classes

[Noah]

webcalendar 1.16 installed since 1.05 was not working for me and getting 
the following fatal error and warning:


# /a/www/webcalendar/tools/send_reminders.php

Warning: PHP Startup: Unable to load dynamic library 
'/usr/local/lib/php/20060613/fileinfo.so' - Cannot open 
"/usr/local/lib/php/20060613/fileinfo.so" in Unknown on line 0

Warning: require_once(../includes/classes/WebCalendar.class): failed to 
open stream: No such file or directory in 
/a/www/webcalendar/tools/send_reminders.php on line 59

Fatal error: require_once(): Failed opening required 
'../includes/classes/WebCalendar.class' 
(include_path='.:/usr/local/share/pear:../includes:') in 
/a/www/webcalendar/tools/send_reminders.php on line 59


How do I fix these errors? Any help is appreciated please.