I wanted to use this addon because I find it very useful to know the % translation from rating on the go. But it throws lots of Lua errors. I've tried fixing them but the addon is more complex than I can manage.
Anyone has a version that works with the 3.3.5a patch or kowns about an addon that does the same thing?
I was reading this topic and was a bit concerned why we would want to "downgrade" an addon that was listed as the newest 3.3.5 WotLK version (v295), but I did some investigation.
RatingBuster r286 was released on October 2nd, and had the note "Fixed some loading errors in 4.0".
All further RatingBuster releases after that were translation updates, "LibStatLogic" stat parser library updates for Cataclysm, removal of some spell damage modifier that was removed in Cataclysm, temporary support for Master Rating (a new stat in Cataclysm), and finally removal of all other deprecated WotLK stats that no longer exist in Cataclysm.
So it's very clear what has happened: The author of RatingBuster was a bit stupid (hehe) and uploaded WoW 4.x Cataclysm addons as 3.3.5.
So RatingBuster r286 and newer DON'T WORK on Wrath of the Lich King! They are for CATACLYSM!
The last real WotLK version of RatingBuster was r285, released June 3rd, 2010.
DON'T DOWNLOAD r287 as suggested by Aliesst above. That's still a Cataclysm version! The only difference is some tweaks to make it loadable on Cataclysm. We clearly don't care about that, since we play WotLK!
So here you go, RatingBuster r285, the final, true Wrath of the Lich King version: