I figured out how to get this to work with the attached images. There looks to be an update to the postbit_attachmentthumbnail template that was throwing it off.
Go into the following plugin:
TCattd - Lightbox replacement for Attach-Thumbs
replace every instance of:
Code:
$tctoputseek = 'rel=\"Lightbox\"';
with:
Code:
$tctoputseek = 'rel=\"Lightbox_$post[postid]\"';