Service Pack 4 Setup Error

Archived from groups: microsoft.public.win2000.setup_upgrade (More info?)

When trying to install install SP4 on W2K Prof I get the
following error messages.

Program Error
sp4iis.exe has generated errors and will be closed by
Windows. You need to restart the program. An error log
is being created.


Service Pack 4 Setup Error
Select 'OK' to undo the changes that have been made, or
select 'Cancel' to quit. If you select 'Cancel', your
system will be left in a partially updated state and may
not work correctly.

The relevant portion of the svcpack.log file is shown
below>

Starting process: sptsupd.exe
***

Return Code = 0
***

Starting process: C:\WINNT\system32\sp4iis.exe -l
***

Return Code = 3221225477
***

DoInstallation:RunInfProcesses for ProcessesToRun Failed
***

Service Pack 4 Setup encountered an error: An error in
updating your system has occurred.
***

Failed Deleting C:\WINNT\system32\msiinst.tmp 2
***

VerifySize: Unable to verify size: Source = NULL:
c:\winnt\oem47.cat

***

An error in updating your system has occurred.

Select 'OK' to undo the changes that have been made, or
select 'Cancel' to quit. If you select 'Cancel', your
system will be left in a partially updated state and may
not work correctly.
***

Message displayed to the user: An error in updating your
system has occurred.

Select 'OK' to undo the changes that have been made, or
select 'Cancel' to quit. If you select 'Cancel', your
system will be left in a partially updated state and may
not work corr
***

User Input: OK
***

Starting process:
C:\WINNT\$NtServicePackUninstall$\spuninst\spuninst.exe /~
-u
***

Dirty Uninstall was successful

***

I have tried running this update a number of times, even
in Safe Mode and still get the same errors.

Any ideas???