Not sure if this a permanent solution but if you open up widget.php from plugins/like-it/tpl/
Change
<a href="<?php get_permalink($post->post_id) ?>" title="<?php echo $post_data->post_title ?>">
to
<a href="<?php echo get_permalink($post->post_id) ?>" title="<?php echo $post_data->post_title ?>">
Basically adding and echo. Hope that helps.
