When writing a post or a page, the editor is stuck in HTML mode. Clicking on "Visual" doesn't work, even though it is enabled in the User configuration. There appears to be an error when I try this in IE (Firefox doesn't show the error)
Line: 3 Char: 1 Error: Invalid character Code: 0 URL: http://www.k-rad.hk/wp-admin/post-new.php
I have tried overwriting all the files, but that didn't change anything.