I just updated to 1.69 from some version many years old, I then ran the reverter. The reverter gave me an error:
...
Patching File xp3.key
Failure Renaming File
Get the critical rebuild.
http://nwn.bioware.com/support/patch_english_hotu.html#crit
The patch has been aborted
So I downloaded the critical rebuild and ran it. Then I ran the reverter again with the same error.
Am I doing something wrong?