Re-sending email contains broke link, i.e. missing FQDN.

My info:

Drupal 5.5, RSVP 5.x-1.2

Background: I created a test RSVP and sent it out. Next, I immediately went to 'send message', selected 'audience->no reply', entered message, and sent it out.

When viewing the original invite email, the links were fine.

When viewing the re-sending invite email, the links were missing my FQDN.

Here is a snippet from the re-sending email message:

"You can view the invitation from where it originated by following this link: rsvp/email/cb4d5d5199fdc14b80b1d4656bc6370e ".

Also, where does this email get created? I saw the original email get put together in theme_rsvp_invite_mail, but I couldn't find the re-sending email. Did I just miss it?

Thanks.