I have set crop in functions.php to resize Images for Posts.
Codex from Wordpress: add_image_size, post_thumbnail
add_theme_support('post-thumbnails');
set_post_thumbnail_size(100, 100, true); //size of thumbs
add_image_size( 'post-thumb', 180, 180, true ); //(cropped)
Usage is like below
<?php if ( has_post_thumbnail() ) { the_post_thumbnail( 'post-thumb' ); } ?>
But it will not resize the thumb and shows the original size. What am I doing wrong?