Recently, I take the error “The folder path ‘C:’ contains invalid character” when I try to install iTunes 8.1 to my Vista box.
I get rid of this error by following the steps below. It worked for me. Hopefully, it works for you. 
- Open the registry editor by using the command “regedit” from the “Run” window.
- Go to “HKEY_LOCAL_MACHINE–>SOFTWARE”
- Delete “Apple Computer, Inc.” and “Apple Inc.” items
- Try to reinstall iTunes.
And, ladies and gentlemen, please welcome, The iTunesssss (It’ll be nice to give an explosion sound effect in the background. :D)
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this didn’t work for me.
got any other solutions?
Hi Raciel,
I looked for the solution for some time. I read most of the forums related about the problem. There are lots of explanations about it.
The above worked for me. Therefore, I wanted to share it. I thought, it might help others. However, there is no unique solution for this problem. It depends on OS, version number etc.
If you find another solution, please share it with us.
Thanks.