I'm logged on as Administrator. I'm running the SQL Server 2012 Express Management Studio installer "As Administrator"
My computer is 64-bit, running Windows 7, SP1.
During the "Initial Setup Files" step I get this message:
"The following error has occurred:
"Could not open key: UNKNOWN\Components\<guid>\<guid>. You should verify that you have sufficient access to that key, or contact your support personnel."
Thanks,
--petrejo