Hi, So I have two thumbnail sizes defined (the default and a new size):
'add_theme_support( 'post-thumbnails' );
set_post_thumbnail_size(200, 100, true);
add_image_size( 'related-thumbnail', 100, 100, true ); // W, H, hard crop mode true
And if I regenerate one at a time, only the most recently generated size displays properly. If I regenerate both thumbnail sizes at the same time, only the 200x100 thumbnail works properly.
In both cases with the thumbnail that does work, it's as if WordPress doesn't know that that image size exists b/c it links to the original sized image. Does this have anything to do with WordPress thumbnail meta being destroyed like with this other plugin? http://wordpress.org/support/topic/plugin-regenerate-thumbnails-broken-badly
WP 3.0.3, AJAX thumbnail rebuild v1.03