I can′t write new posts

Hi,

I am having a big problem since yesterday afternoon.
Whenever I try to write a new post I get the following error message:
“Internet Explorer can not open the site htpp://latitudfutbol.net/wp-admin/post-new.php.
Operation cancelled”.

I have tried almost everything to get this solved, but I′va had no luck so far.

Please, can anyone help me?

Thank you very much in advance.

Regards,

Ariel / Barcelona, Spain