My initial response was "that should still work" but then I tried it, and looked in its code, and there's simply no way that file could
ever work since it's attempting to call methods on a global frame reference that doesn't exist.
Here's a version that actually works. Just overwrite the Lua file from the download you linked with the attached file. TomTom is indeed fat and sluggish.
Edit: Oh, I also commented out the nonsense that makes it disable itself after each run. I'm perfectly capable of deciding when I'm done debugging and turning it off myself, thanks.
Edit #2: Attachment removed. See here for updated files.