[Moderator Note: Topic title amended. Your problem is no more urgent than anyone else's.]
PLEASE HELP, I updated my WordPress to the newest version 3.8, and it first came up with a message saying:
Warning: call_user_func_array()(/websites/123reg/... [function.call-user-func-array]: First argument is expected to be a valid callback, '_show_post_preview' was given in on line 429
and said i needed to update the database, and a button to do so. when you clicked it said the same but update complete and a 'continue' button...when you pressed the continue button it just brought you back to the previous screen.
I think i may of accidentally deleted the wp-includes/plugin file in my web hosting control panel and now there is now NO wordpress screen, just an error that says:
Warning: require(/websites/123reg/XXXXXXXX/XXXXXX... [function.require]: failed to open stream: No such file or directory in /websites/123reg/XXXXXX/XXXXXXXXXX/publi... on line 72
Fatal error: require() [function.require]: Failed opening required '/websites/123reg/XXXXXXXXXXXXXXX/public... (include_path='.:/usr/local/php52/share/... in /websites/123reg/XXXXXXXXXXXXXXXX/public... on line 72
Someone PLEASE help?!?!??! And explain in a simple way? TNX!!!!!