Try to re-download the whole iTunes/Quicktime package, it could be a
corrupted download. I would sometimes have the same problem.

"nyc_sud" wrote:

> I am unable to install/reinstall itunes/quicktime. I was able to use
> itunes untill a few days ago but am unsure what has changed since then.
> I think I do recall installing quicktime alternative, which I have
> already uninstalled.
>
> The itunes portion installs without issue. I get the following message
> when QuickTime tries to load"QuickTime Installation Failed" "Error
> Code -3".
>
> I have tried to delete the contents of the Temp directory without
> sucess.
>
> Any help would be appreciated.
>
> TIA
>
>