I've downloaded QH b4, but this time when i try to download it, for some reason it's not working. The addon button in the toon selections screen is not there(b4 you enter world). I've tried everything i can think off, any suggestions?

Have your Re-installed or Repaired lately? If so make sure your Interface folder reads like Interface and not Interface32158461321etc..

No I haven't repaired lately, but i have tried several time to add questhelpher, just checked and the folder says interface! no #'s after it. Any other suugestions? or ideas as to what might be the problem?