Using Wordpress 3.01 with Atahualpa 3.4.9
When Adding or Editing a post, I do not have the sidebar item "Set Post Thumbnail". I have only Publish, CAtegories, Post Tags and Set Featured Image. I just want to set a post thumbnail.

I checked functions.php under Themes -> Editor and the code below is there. But still I can't see the "Set Post Thumbnail" link.

I'm stumped. Can anyone please try to help me with this?

// Since 3.4.5: WP 2.9 thumbnails support:
if ( function_exists( 'add_theme_support' ) ) { // Added in 2.9
	add_theme_support('post-thumbnails');
	if ($bfa_ata['post_thumbnail_crop'] == "Yes") 
		set_post_thumbnail_size( $bfa_ata['post_thumbnail_width'], $bfa_ata['post_thumbnail_height'], true );
	else set_post_thumbnail_size( $bfa_ata['post_thumbnail_width'], $bfa_ata['post_thumbnail_height'] );
	add_image_size( 'single-post-thumbnail', 400, 9999 ); // Permalink thumbnail size
}

do you see an item in the right side of the post called 'Featured Image? That is the thumbnail section

oh boy am I embarrassed. "post thumbnail" was renamed to "featured image" with 3.0. I should have caught that in all my searches. thanks for replying to my knucklehead question Juggledad. You're the best!