Thomthom, I must say, and I'm sure many others have, that this plugin is a lifesaver! It is amazing how some details so tiny can have such a huge impact to STLs. I would have never found the errors otherwise!
Also... for anyone else having trouble with the installation process with rbz, I just searched google for "tt_solid_inspector.rb" and that regular ol' *.rb file is posted in other places =-)I put that in my plugin folder and it worked great!