SQL Server 2005 SP2 Fails

I have a Windows Server 2003 Enterprise Edition SP1 with a couple of SQL Server 2000 instances on it and two SQL Server 2005 instances on it. 

I tried to install SQL Server 2005 SP1, but kept getting failures.  I saw that SP2 fixed some of the issues with installation issues that SP1 had.  So, I tried to install it.  Some of the smaller components install successfully (VSS Writer, Backward Compatibility, SQLXML4, MSXML 6.0 Parser, Native Client, Support Files), but all of the base services fail to install (Database services, Reporting Services failed for two different instances). 

I've downloaded the SP2 from the Microsoft site local to that server and install from there.  I don't have space problems on the drives in question.

In the summary log that's located at C:Program FilesMicrosoft SQL Server90Setup BootstrapLOGHotfix, I see:

Error Number              : 29513
Error Description         : MSP Error: 29513  SQL Server Setup Failed to compile the Managed Object Format (MOF) file C:Program FilesMicrosoft SQL Server90Sharedsqlmgmproviderxpsp2up.mof. To proceed, see "Troubleshooting an Installation of SQL Server 2005" or "How to: View SQL Server 2005 Setup Log Files" in SQL Server 2005 Setup Help documentation.

I've searched through many links, one suggested that the WMI could be potentially corrupt.  So, I also downloaded with WMIDiag utility and ran it.  So, I have a log from that as well.  It did have 8 errors in it.  But, the information in the report hasn't really helped me determine how to fix those errors. 

While I was looking around, I found another log file located at C:WINNTsystem32wbemLogs called the mofcomp.log.  As my error looks like a compile error issue, I looked in that log file and found the following at the times when the install was failing:

(Thu Feb 22 16:29:49 2007.1910312) : Parsing MOF file: C:Program FilesMicrosoft SQL Server90Sharedsqlmgmprovider.mof
(Thu Feb 22 16:29:49 2007.1910625) : Finished compiling file:C:Program FilesMicrosoft SQL Server90Sharedsqlmgmprovider.mof
(Thu Feb 22 16:34:25 2007.2186343) : Parsing MOF file: C:Program FilesMicrosoft SQL Server90Sharedsqlmgmproviderxpsp2up.mof
(Thu Feb 22 16:34:25 2007.2186343) :  (1): error SYNTAX 0X8004401e: This is not a valid MOF file

This makes me wonder if there is an invalid MOF file as part of SP2?

Also, when I go into Microsoft SQL Server Management Studio, I can no longer look at any of my maintenance plans.  All of them throw an error which says: 

Error loading 'Daily Backup' : Unable to cast COM object of type 'Microsoft.SqlServer.Dts.Runtime.Wrapper.ApplicationClass' to interface type 'Microsoft.SqlServer.Dts.Runtime.Wrapper.IDTSApplication90'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{7591CC39-276A-4973-97C7-4EFEA5A5788F}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE))..

Any help would be appreciated.

Thanks,

Paul