@Erin: Thanks for the heads-up, good catch! (Actually, you could select items individually, just not by checking the checkbox… :-) In an attempt to “help” devs, by making the entire <tr> clickable, I broke the actual checkbox itself… All fixed now, and live in the WP Repository:
http://wordpress.org/extend/plugins/navigation-menu-ids-classes/

Thanks again, always nice to hear from devs, and to find out about errors!!

Atg