When I uploaded the script, I uninstalled the game, check the registry for any entries related to it (there were none). Then I re-installed it (it prompted for the correct path) again.
While it appears it prompted for the correct path it may still have been showing you the last install path that was used. Did you install anything else between installs of UC? You might want to uninstall it, install it to a very different path, uninstall that, and then see what the path shows you when you reinstall it.
You know, this could be an NSIS bug.
Quite possibly. Bugs have happened before with that installer.
This comment was edited on Jan 2, 18:20.