When trying to install any addon I get this error:

12:20:02: Failed to copy the file 'C:/Users/Ron/AppData/Local/Temp/QuestHelper/QuestHelper/Art/Fluff.tga' to 'C:/Users/Public/Games/World of Warcraft/Interface/AddOns/QuestHelper/Art/Fluff.tga' (error 5: access is denied.)
12:20:02: Failed to copy the file 'C:/Users/Ron/AppData/Local/Temp/QuestHelper/QuestHelper/Art/Glow.tga' to 'C:/Users/Public/Games/World of Warcraft/Interface/AddOns/QuestHelper/Art/Glow.tga' (error 5: access is denied.)
12:20:02: Failed to copy the file 'C:/Users/Ron/AppData/Local/Temp/QuestHelper/QuestHelper/Art/Icons.tga' to 'C:/Users/Public/Games/World of Warcraft/Interface/AddOns/QuestHelper/Art/Icons.tga' (error 5: access is denied.)
12:20:02: Failed to copy the file 'C:/Users/Ron/AppData/Local/Temp/QuestHelper/QuestHelper/Art/Upload.tga' to 'C:/Users/Public/Games/World of Warcraft/Interface/AddOns/QuestHelper/Art/Upload.tga' (error 5: access is denied.)
12:20:02: Failed to copy the file 'C:/Users/Ron/AppData/Local/Temp/QuestHelper/QuestHelper/AstrolabeQH/Astrolabe.lua' to 'C:/Users/Public/Games/World of Warcraft/Interface/AddOns/QuestHelper/AstrolabeQH/Astrolabe.lua' (error 5: access is denied.)

 Can someone please help me with this? My new laptop came with Vista and I do not have a clue what to do. Thanks

 I fixed it. I deleted all of the addons in that folder and now it appears to be working.

Didnt fix anything for me, im still getting a window popup with "error 5" for every addon i try to update, i REALLY hope someone finds a solution soon as this is really getting on my nerves.  :(

Blame Microsoft for incompetence. Really, I am not joking. The reason Blizzard moved World of Warcraft OUT of the program files was because of MS's silly security settings, and that they wouldn't let programs add, delete, or modify their OWN code.

Programs in the "program files" folder? What a ridiculous thought!

While I don't know what "error 5" is, I can help you somewhat: read the first post in the sticky. If that doesn't help (try everything) then come back here and the community will suggest something, I'm sure.

  Quote:

Originally Posted by myrroddin

MS's silly security settings, and that they wouldn't let programs add, delete, or modify their OWN code.

The issue that I have now is from the last patch. They changed the way that the launcher is 'launched'. My firewall pops a warning every time now. Why do we need new a temporary launcher created at each runtime? I'm not willing to just add a blanket, "allow all 'launchers' in the temp directory" rule to my firewall. For now it's just a simple click to allow but who knows where they are going with this.