I'm having this weird issue, when a user is trying to access "post-new.php" they are met with a "no data received" page. Eventually I tracked down the error to "wp-includes\js\tinymce\langs\wp-langs.php" accessing which leads to the same problem.
The weird thing is, I have 3 copies of the same wordpress installation and database, the original copy is fine but the other two gives the error. Any new clean installation(no plugin activated, default theme, empty db) has the same problem.
Has anybody met a similar situation? What can I do in this case?