Backup Exec 11 - Update SERVICE PACK 5 failed to install

A customer's Backup Exec is unable to update. When we log in to Backup Exec we see the following:

"Update SERVICE PACK 5 failed to install. Review Backup Exec installation log for more information"

Looking in the BE installation log, I see the following:

Symantec Backup Exec (TM) 11 for Windows Servers Patch Log : SERVICE PACK 5

04-14-2010,06:38:56 : Entering PatchSetup.exe
04-14-2010,06:38:56 : Command Line: /NAME:Service Pack 5 /UI:NONE
04-14-2010,06:38:56 : Executing GetPatchInfo.
04-14-2010,06:39:57 : This patch package could not be opened. Verify that the patch package exists and that you can access it, or contact the application vendor to verify that this is a valid Windows Installer patch package. F:\WINNT\INSTALL\BE\Symantec Backup Exec for Windows Servers.msi
04-14-2010,06:39:57 : V-225-136: The patch failed to install. Return code: 1635 ***To search for information about this error, click here
04-14-2010,06:39:57 : Exiting PatchSetup.exe
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Rodney BarnhardtServer AdministratorCommented:

What is the source of the patch? Is it a downloaded file, CD, network share, etc? I have seen problems depending on the source.
adam2112Author Commented:
RBARNHARDT, I think it is coming from LiveUpdate.
Rodney BarnhardtServer AdministratorCommented:

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