Can't install or uninstall Reader 8.1.2. receive error message 1402. Could not open key:

I can't install any version of Reader. I have version 8.1.2 downloaded but it won't install. Can't download another version because it attempts to remove this version but it cant and all roads lead to this error message: Error 1402. Could not open key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\optionalComponents\MSFS
please help.

You can try the method described here:
http://forums.adobe.com/message/3350037#3350037

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