Here is a fix for this. Edit bfa_post_parts.php and change line 124 (version 3.5.3) from
HTML Code:
if (function_exists('the_post_thumbnail') AND !function_exists('tfe_get_image')) the_post_thumbnail();
to
HTML Code:
if (function_exists('the_post_thumbnail') AND !function_exists('tfe_get_image'))
if(has_post_thumbnail()): ?>
<a href="<?php the_permalink() ?>"> <?php the_post_thumbnail(); ?></a>
<?php endif;