vbseo and error_log

Could anyone tell me what did i do wrong to have this error?

Code:

[16-Dec-2008 10:36:48] PHP Warning:  include(cron.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:36:48] PHP Warning:  include(cron.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:36:48] PHP Warning:  include() [<a href='function.include'>function.include</a>]: Failed opening 'cron.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:36:55] PHP Warning:  include(cron.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:36:55] PHP Warning:  include(cron.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:36:55] PHP Warning:  include() [<a href='function.include'>function.include</a>]: Failed opening 'cron.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:37:01] PHP Warning:  include(cron.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:37:01] PHP Warning:  include(cron.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:37:01] PHP Warning:  include() [<a href='function.include'>function.include</a>]: Failed opening 'cron.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:37:09] PHP Warning:  include(cron.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:37:09] PHP Warning:  include(cron.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:37:09] PHP Warning:  include() [<a href='function.include'>function.include</a>]: Failed opening 'cron.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:37:15] PHP Warning:  include(cron.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:37:15] PHP Warning:  include(cron.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:37:15] PHP Warning:  include() [<a href='function.include'>function.include</a>]: Failed opening 'cron.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:37:54] PHP Warning:  include(cron.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:37:55] PHP Warning:  include(cron.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:37:55] PHP Warning:  include() [<a href='function.include'>function.include</a>]: Failed opening 'cron.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:38:42] PHP Warning:  include(cron.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:38:42] PHP Warning:  include(cron.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /home/######/public_html/forum/vbseo.php on line 40
[16-Dec-2008 10:38:42] PHP Warning:  include() [<a href='function.include'>function.include</a>]: Failed opening 'cron.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/######/public_html/forum/vbseo.php on line 40

Hello Steven,

do you have an existing cron.php file in forums folder?