windows vista - Installation of Microsoft SQL Server 2008 R2 Developer Edition fails with unknown property

Installing MS SQL Server 2008 Developer edition on a Vista Ultimate 64 Bit machine keeps returning the following error message:

SQL Server Setup failure

SQL Server Setup has encountered the following error:
Unknown property.

I've tried the following:

• Uninstalled the previous installation


• Deleted all folders that were installed and had to do with SQL Server 2008


• Cleared my registry using ccleaner


• Tried 'fixit' utility from Microsoft uninstalling left overs

I'm totally out of ideas.

Answer

I just installed sql server 2012. That went flawless. Problem solved.