Cannot fix corrupted registry value: The handle is invalid error.

I'm trying to install SQL Server Express 2008 using Web Platform Express 2008
installer (2.0 beta) on Windows Vista Ultimate SP1 (all updates installed),
but it fails. I searched for the reason, and found that the values in the
following registry key is corrupted:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Perflib\009

Counter and Help values cannot include empty lines, but there is an empty
line at the end of them. When I tried to delete that line, following error
occurs:

Error editing value - Cannot edit counter: Error writing the value's new
contents.

When I tried to change permissions to full for that key, following error
occurs:

Windows security - Unable to save permission changes on 009. The handle is
invalid.

Same error occurs when I try to change ownership, too. I tried using
subinacl tool, too. But same error occurs: RegSetKeySecurity Error : 6 The
handle is invalid

I'm using the windows as a domain user with some group policies at work. But
I install software with my local user account with full administrator rights
without any problem until now. I tried lots of solutions of simular issues.
Is there a way to fix this issue without formatting and reinstalling the
windows?

Step one of any trouble shooting process would be to eliminate any none
standard items.
So the obvious question -- Do you get the same error when not using a BETA
product to drive the installs? or have you not bothered with that yet?
Also what do you mean by not being allowed an empty line at he end of the
counter reg value?
Looking at mine (which does have SQL Express 2008 and more installed) when
you click on the reg item to edit the values are highlighted in blue and the
cursor is placed two lines/carriage returns after the last entry on each
one. These are not real empty lines as they would appear as a blue bar in a
Multi-String typed reg value - so this is normal behavior. All the errors
you see when trying to remove the 2 "carriage returns" in both values are
completely normal and not a corruption in the registry.

So I think your problem lie elsewhere - so as I said step one don't use a
Beta installer and try the real package.
Ensure you have sufficient permissions to perform the install.

Yes, after I posted my question, I saw in anotyher post that says value
should end with double null characters.

When trying a solution, I created a key with a different name, and copied
the values to the same values in that key. When I clicked OK, it said the
value cannot include empty lines and it will clean the empty lines. Then I
looked at the values and there is one empty line et the end. So I thought the
other key is corrupted, but I was wrong.

I will unistall and reinstall with version 1 of the installer. I hope it
works.

I'm having the same problem with the perflib\009 key. I installed SQL
2008 Ent on Vista Ultimate 32 bit. The errors are exactly the same. All
RTM software; no betas here.