Post thumbnail not working

Hi,

Can someone please clarify what the new 2.9 wp post thumbnail can and can’t do.

I’m having a difficult time with getting it to crop images down

Does the hard-cropping actually work? when and when doesn’t it work?

I want to be able to upload an image and Ideally it would be cropped to the thumbnail size I specced via a hard crop.
I can work around the general un-user friendliness of it all at the moment. I’ve been using the image editing functionality with some success.

this is how I’m declaring it:

set_post_thumbnail_size(200, 126, true);

<?php
if ( has_post_thumbnail() ) {
the_post_thumbnail(array(200,126), array( ‘class’ => ‘alignleft’));
} else {
echo
‘<img src=”‘ . get_bloginfo(‘template_directory’) . ‘/images/thumb-na.jpg” />’;
}
?>