I had a look at the instructions again, and added a couple of steps... re-tested everything as well.
Download the updated instructions.
You'll need to overwrite cp_quotes.cgi, do the two steps added for ultimatebb.cgi and the two ones added for cp.cgi.
Oh, I also updated the code for modifying your public_forum_summary.pl (both normal and JCTemplates).
Give it a try and see if that works.