Rated 5 out of 5 stars

You can update this fine add-on yourself to use it with later versions of TB (i currently use it with 2.0.0.12):

- open messageid-finder-2.0.0-mz+tb.xpi and modify install.rdf
- find the line 2.0.0.XX and replace XX with the your version number
- save the file and reinstall msg-id finder

I used emacs to modify the file (emacs can open .xpi out-of-the-box), but any other unzip software should do as well.