I couldn’t see custom fields under post-new.php when I add a new post.
It was working before when I installed the new theme.
Right now works under post-new.php?post_type=videos (for theme) but I need to change it!
You posted this question in the WordPress.com forum and to get an answer to your question you will need to post your question in the WordPress.org forums. You can get to the WordPress.org forums here, http://wordpress.org/support/