Cannot Save Page without any Related Posts

Hi guys,

I cannot save a page/post with NO related post configured.

Getting this error:

Notice: Undefined index: MRP_related_posts in /Applications/MAMP/www.domain.com/wp-content/plugins/microkids-related-posts/microkids-related-posts.php on line 282
Call Stack
# Time Memory Function Location
1 0.0039 815984 {main}( ) ../post.php:0
2 0.8075 20772712 edit_post( ) ../post.php:205
3 0.8191 20806104 wp_update_post( ) ../post.php:257
4 0.8216 20849696 wp_insert_post( ) ../post.php:3003
5 1.0006 21178136 do_action( ) ../post.php:2947
6 1.0007 21180096 call_user_func_array ( ) ../plugin.php:406
7 1.0007 21180128 MRP_save_postdata( ) ../plugin.php:406

( ! ) Warning: Cannot modify header information - headers already sent by (output started at /Applications/MAMP/www.domain.com/wp-content/plugins/microkids-related-posts/microkids-related-posts.php:282) in /Applications/MAMP/www.domain.com/wp-includes/pluggable.php on line 876

Any ideas?

http://wordpress.org/extend/plugins/microkids-related-posts/