SQL 2008 on SBS 2008 Install nightmares
First - remove Sql Express tools, if that fails, take a good headache pills.
If you rececive sometnih like this :
Could not open key: UNKNOWN\Components\1FA18F7974E099CD0AF18C3B9B1A1EE8\461C2B4266EDEF444B864AD6D9E5B613. Verify that you have sufficient access to that key, or contact your support personnel.
This workaround worked for me :
secedit /configure /cfg %windir%\inf\defltbase.inf /db defltbase.sdb /verbose /areas REGKEYS
thanks to :
http://mark.michaelis.net/Blog/SQLServer2008InstallNightmare.aspx