I've found a very strange issue with this mod. I've re-done it from scratch 3 times and got the same result every time. (using version 6.3.1.1)
After completing the mod, I have the new modification wordlet page and that works fine.
However, I have "member ratings" turned completely off in my forum and after installing this hack, each member's personal rating summary appears above the PM inbox on his "Edit Profile/PM summary" page. The rest of the member rating feature is still gone (you can't vote for members and it does not show ratings in threads).
It seems like one of the two changes in ultimatebb.cgi has blocked or reversed the "off" switch for this part of the ratings feature.
Any help or advice would be MUCH appreciated -- thanks!
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Added Later:
Okay, I figured out the problem. If anyone else is trying this, the very last line in the hack's txt has a tiny mistake. When it says to add:
foreach my $file (qw( wordlets_mods
You need to place an extra space at the end.