Need help, please

[eventos2]

Hi! I had my website on x10hosting.com named eventoscoyoacan.x10.mx, but then, one day I opened it and it magically appeared me this:
http://imgur.com/a/Vkgkb (Click there)
I hope you help me I have lots of information there. Please help me.

 

[Dead-i]

Hi,

I have enabled PHP error reporting on your account, and your website is now showing an error. At a glance, it looks like part of wp-includes/formatting.php is missing. You might want to restore this file from a fresh copy of WordPress.

Thank you,

 

[eventos2]

Oh, thanks a lot for your help, thank you!