I believe my website was hacked so I decided to remove everything from teh server and start from scratch.
I downloaded the latest version of Word Press (3.5.1) and uploaded this onto my server. I then uploaded my theme.
I am getting the following error messages and I cannot work out what I need to do...please please help
Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, 'wp_cron' was given in /home/a3661979/public_html/wp-includes/plugin.php on line 406
And
Fatal error: Call to undefined function wp_next_scheduled() in /home/a3661979/public_html/wp-includes/update.php on line 42