LD, please check the URL before guessing
Raichu, make sure that you have uploaded vars_statistics.cgi to variables folder. If it still doesn't work, rehack ultimatebb.cgi. About the other thing - make sure you did the step of vars_wordlets_mods.cgi, and uploaded it to variables folder. Also make sure you put it right after %vars_wordlets_mods = (, and not at the end.