Hey Myrkul! It's been a while.. haha. It's nice to know someone's still using this thing!
It's interesting that the older version still works when the latest one doesn't. Btw, you can find all versions of Let's Tag here:
http://brinkoftime.net/software/Let%27s%20Tag/
Or, well, you can
now. That folder was previously forbidden.
Also, just for fun, I've thrown the code up on GitHub. You can find that here:
https://github.com/tomvoros/lets-tag