I am working in a new project, and I just realized that in the page/post edit pages, I don´t have the option to set a featured image/ post thumbnail.
I have checked and Twenty Ten has thumbnails support by default ( add_theme_support( ‘post-thumbnails’ is in functions.php). I also tried setting the thumbnails size with set_post_thumbnail_size, but no luck.
P.D: I installed this in a new server, is it possible that it has something to do with that? Are there any specific requirements to use post thumbnails?
The featured image meta box is enabled under following conditions:
if ( current_theme_supports( 'post-thumbnails', $post_type ) && post_type_supports( $post_type, 'thumbnail' ) && ( ! is_multisite() || ( ( $mu_media_buttons = get_site_option( 'mu_media_buttons', array() ) ) && ! empty( $mu_media_buttons['image'] ) ) ) ) add_meta_box('postimagediv', __('Featured Image'), 'post_thumbnail_meta_box', $post_type, 'side', 'low');
So check that: