I've been banging against this for a few days. Keep getting this unauthorized error when trying to install SQL 2008 R2 on a Windows 7 machine. I've changed permissions on the key, does not fix... Created an admin user, gave specific permissions on that key, does not fix... Disabled all firewalls, installed from a local admin, does not fix... I'm out of patience and ideas! :) Help?

2012-07-06 13:09:11 Slp: Sco: Attempting to set value AppName 
2012-07-06 13:09:11 Slp: SetValue: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VSTAHostConfig\SSIS_ScriptComponent\2.0, Name = AppName 
2012-07-06 13:09:11 Slp: Sco: Attempting to create base registry key HKEY_LOCAL_MACHINE, machine  
2012-07-06 13:09:11 SSIS: Processing Registry ACLs for SID 'S-1-5-21-2383144575-3599344511-819193542-1074' 
2012-07-06 13:09:11 Slp: Sco: Attempting to open registry subkey SOFTWARE\Microsoft\Microsoft SQL Server\100 
2012-07-06 13:09:11 SSIS: Setting permision on registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\100. 
2012-07-06 13:09:11 Slp: Sco: Attempting to replace account with sid in security descriptor D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:11 Slp: ReplaceAccountWithSidInSddl -- SDDL to be processed:  D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:11 Slp: ReplaceAccountWithSidInSddl -- SDDL to be returned:  D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:11 Slp: Sco: Attempting to set security descriptor D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:11 Slp: Sco: Attempting to normalize security descriptor D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:11 Slp: Sco: Attempting to replace account with sid in security descriptor D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:11 Slp: ReplaceAccountWithSidInSddl -- SDDL to be processed:  D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:11 Slp: ReplaceAccountWithSidInSddl -- SDDL to be returned:  D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:11 Slp: Sco: Attempting to normalize security descriptor D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:11 Slp: Sco: Attempting to replace account with sid in security descriptor D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:11 Slp: ReplaceAccountWithSidInSddl -- SDDL to be processed:  D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:11 Slp: ReplaceAccountWithSidInSddl -- SDDL to be returned:  D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:11 Slp: Prompting user if they want to retry this action due to the following failure: 
2012-07-06 13:09:11 Slp:
---------------------------------------- 
2012-07-06 13:09:11 Slp: The following is an exception stack listing the exceptions in outermost to innermost order 
2012-07-06 13:09:11 Slp: Inner exceptions are being indented 
2012-07-06 13:09:11 Slp:  2012-07-06 13:09:11 Slp: Exception type: Microsoft.SqlServer.Configuration.Sco.ScoException 
2012-07-06 13:09:11 Slp:     Message:  
2012-07-06 13:09:11 Slp:         Attempted to perform an unauthorized operation. 
2012-07-06 13:09:11 Slp:     Data:  
2012-07-06 13:09:11 Slp:       WatsonData = 100 
2012-07-06 13:09:11 Slp:       DisableRetry = true 
2012-07-06 13:09:11 Slp:     Inner exception type: System.UnauthorizedAccessException 
2012-07-06 13:09:11 Slp:         Message:  
2012-07-06 13:09:11 Slp:               Attempted to perform an unauthorized operation. 
2012-07-06 13:09:11 Slp:         Stack:  
2012-07-06 13:09:11 Slp:                 at System.Security.AccessControl.Win32.GetSecurityInfo(ResourceType resourceType, String name, SafeHandle handle, AccessControlSections accessControlSections, RawSecurityDescriptor& resultSd) 
2012-07-06 13:09:11 Slp:                 at System.Security.AccessControl.NativeObjectSecurity.CreateInternal(ResourceType resourceType, Boolean isContainer, String name, SafeHandle handle, AccessControlSections includeSections, Boolean createByName, ExceptionFromErrorCode exceptionFromErrorCode, Object exceptionContext) 
2012-07-06 13:09:11 Slp:                 at Microsoft.SqlServer.Configuration.Sco.SqlRegistrySecurity..ctor(ResourceType resourceType, SafeRegistryHandle handle, AccessControlSections includeSections) 
2012-07-06 13:09:11 Slp:                 at Microsoft.SqlServer.Configuration.Sco.SqlRegistrySecurity.Create(InternalRegistryKey key) 
2012-07-06 13:09:11 Slp:                 at Microsoft.SqlServer.Configuration.Sco.InternalRegistryKey.GetAccessControl() 
2012-07-06 13:09:11 Slp:                 at Microsoft.SqlServer.Configuration.Sco.InternalRegistryKey.SetSecurityDescriptor(String sddl, Boolean overwrite) 
2012-07-06 13:09:11 Slp:
---------------------------------------- 
2012-07-06 13:09:24 Slp: User has chosen to retry this action 
2012-07-06 13:09:24 Slp: Sco: Attempting to normalize security descriptor D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:24 Slp: Sco: Attempting to replace account with sid in security descriptor D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:24 Slp: ReplaceAccountWithSidInSddl -- SDDL to be processed:  D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:24 Slp: ReplaceAccountWithSidInSddl -- SDDL to be returned:  D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:24 Slp: Sco: Attempting to normalize security descriptor D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:24 Slp: Sco: Attempting to replace account with sid in security descriptor D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:24 Slp: ReplaceAccountWithSidInSddl -- SDDL to be processed:  D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:24 Slp: ReplaceAccountWithSidInSddl -- SDDL to be returned:  D:(A;OICI;KR;;;S-1-5-21-2383144575-3599344511-819193542-1074) 
2012-07-06 13:09:24 Slp: Prompting user if they want to retry this action due to the following failure: 
2012-07-06 13:09:24 Slp:
----------------------------------------