Error 1401, 1402, 1406 or “program not installed for current user” - Error Installing Office or Opening Office App or Office File - Fixit - Manual fix OPA11.dat / Opa12.dat / DATA.dat-
How to troubleshoot problems that you may experience when you try to activate an Office product -
http://support.microsoft.com/kb/903275opa11.dat/opa12.dat data.datApparently this still applies to 2010 too
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