Access Denied Error:5 Adding Package to .WIM with DISM

I am trying to add .CAB packages to a custom .wim file. I am able to mount the image, but upon trying to add .cab packages to the image, it gives me an error like:

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An error occurred - Package_for_KB2588516 Error: 0x80070005

Error: 5

Access is denied.

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Here is a segment of the DISM.log. I can post the full Logfile if needed. I am running the command prompt with elevated privileges.

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2012-02-10 11:58:45, Info CBS Failed to delete registry value: LastProgressState [hrESULT = 0x80070005 - E_ACCESSDENIED]

2012-02-10 11:58:45, Info CBS Failed to delete store object value named: LastProgressState [hrESULT = 0x80070005 - E_ACCESSDENIED]

2012-02-10 11:58:45, Info CBS Failed to delete registry value: LastError [hrESULT = 0x80070005 - E_ACCESSDENIED]

2012-02-10 11:58:45, Info CBS Failed to delete store object value named: LastError [hrESULT = 0x80070005 - E_ACCESSDENIED]

2012-02-10 11:58:45, Info CBS Failed to delete registry value: ExtendedError [hrESULT = 0x80070005 - E_ACCESSDENIED]

2012-02-10 11:58:45, Info CBS Failed to delete store object value named: ExtendedError [hrESULT = 0x80070005 - E_ACCESSDENIED]

2012-02-10 11:58:45, Info CBS Failed to persist status for package: Package_for_KB2588516~31bf3856ad364e35~x86~~6.1.1.1 [hrESULT = 0x80070005 - E_ACCESSDENIED]

2012-02-10 11:58:45, Info CBS Failed to delete registry value: ExtendedError [hrESULT = 0x80070005 - E_ACCESSDENIED]

2012-02-10 11:58:45, Info CBS Failed to delete store object value named: ExtendedError [hrESULT = 0x80070005 - E_ACCESSDENIED]

2012-02-10 11:58:45, Info CBS Failed to query sources for package: Package_for_KB2588516~31bf3856ad364e35~x86~~6.1.1.1 [hrESULT = 0x80070005 - E_ACCESSDENIED]

2012-02-10 11:58:45, Info CBS Failed to persist package: Package_for_KB2588516~31bf3856ad364e35~x86~~6.1.1.1. [hrESULT = 0x80070005 - E_ACCESSDENIED]

2012-02-10 11:58:45, Info CBS Failed to delete registry value: LastProgressState [hrESULT = 0x80070005 - E_ACCESSDENIED]

2012-02-10 11:58:45, Info CBS Failed to delete store object value named: LastProgressState [hrESULT = 0x80070005 - E_ACCESSDENIED]

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