Hello, everything were fine with menus till today.
I tried to change the order of menus and clicked on Menus sidebar in WP admin.
All that i got was a pre-loaded page - http://img-fotki.yandex.ru/get/4506/bloodfeed.d6/0_42d62_3d921efa_XL.jpg
And thats all, I cant get to my menus no more.
JS console in Chrome says that "Uncaught ReferenceError: postboxes is not defined" on http://mydomain.ru/wp-admin/load-scripts.php?c=1&load=jquery,utils,nav-menu&ver=2b05c108d9016a4caa470b8edaf40953
What is this about? How can I fix it?