If you do a Google search you may find other solutions.
I found this one
http://www.multipleplatforms.com/how-to_tips.htm
Quoted from site
Error 1402 or 1406 When Installing iTunes
According to Apple's web site, you should take the following steps when you receive a'Error 1402 0r 1406' message:
Step 1
Thoroughly remove iTunes . Tip: If you have a hard time removing iTunes you may need to download and use the Windows Installer CleanUp Utility from Microsoft.
Step 2
Delete any files in: C:\Documents and Settings\<your user name>\Local Settings\Temp Tip: You may have to show hidden files and folders to see this folder.
Step 3
Download and install iTunes for Windows by clicking on the link above.
I use Windows XP and when I try and install iTunes, I get a 1406 error that is located in: \software\classes\.rmp\OpenWithList\iTunes.exe . Then I get a 1402 and 'fatal' error. I have already changed some stuff around in my registry; I used to get the 1406 error three times, but now I only get this one. When I try to change the permissions, it tells me I have access to view the permission settings, but not to change them, even though I am the administrator of my computer. Does anyone know the solution? An iPod isn't nearly as fun with no music ![]()

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