Update Rollup 9 Fails to install on HUB/CAS server

Hi,

I am running Exchange Server 2007 with SP1 (Update Rollup 7) on Windows Server 2003 R2 x64bit.

I am recieving the following error whilst attempting to update my HUB/CAS server with UR9:

The installer has encountered an unexpected problem installing this package. This may indicate a problem with this package. The error code is 2771

I have performed a log of the MSI to a txt file which i will include the related components at the end of this post.

Actions  I have taken:
- Performed install with Domain Administrator and Exchange Administrator Credentials
- Restarted Server
- Attempted to install update Rollup 8 (Same error)
- Confirmed correct (x64bit) version of update
- Imported HKLM/SOFTWARE/MICROSOFT/EXCHANGE/V8.0/ADMIN TOOLS from a working server which had RU7 installed.
- Output verbose log to .txt file

Links i have used:
http://exchangeshare.wordpress.com/2009/05/30/exchange-update-rollup-installation-it-is-not-nightmare/
http://social.technet.microsoft.com/Forums/en-US/exchangesoftwareupdate/thread/82be34fd-2a6e-4ace-9548-d81d59c68cd9
http://www.msxfaq.de/admin/rollup-troubleshoot.pdf

Notes:
- There are no interum updates installed
- I Performed a search for the GUID key (24B2C164-DE66-44FE-B468-A46D9D5E6B31}) provided in the Event ID: 1024 errors and they pointed to Update Rollup 4, And Update Rollup 7. Previously we had upgraded from 4-7

Below is a truncated version of the verbose log:
MSI (c) (24:44) [18:06:38:207]: Note: 1: 2205 2:  3: Condition
MSI (c) (24:44) [18:06:38:207]: Machine policy value 'EnforceUpgradeComponentRules' is 0
MSI (c) (24:44) [18:06:38:222]: SELMGR: ComponentId '{A4AFCAF6-4B97-4222-AF9C-064F92569DB7}' is registered to feature 'AdminTools', but is not present in the Component table.  Removal of components from a feature is not supported!
MSI (c) (24:44) [18:06:38:222]: Note: 1: 2771 2: AdminTools
MSI (c) (24:44) [18:06:38:222]: Note: 1: 2262 2: Error 3: -2147287038
MSI (c) (24:44) [18:06:38:238]: Transforming table Error.

MSI (c) (24:44) [18:06:38:238]: Transforming table Error.

MSI (c) (24:44) [18:06:38:238]: Note: 1: 2262 2: Error 3: -2147287038
MSI (c) (24:44) [18:06:38:254]: Transforming table Error.

MSI (c) (24:44) [18:06:38:254]: Transforming table Error.

MSI (c) (24:44) [18:06:38:254]: Note: 1: 2262 2: Error 3: -2147287038
DEBUG: Error 2771:  Upgrade of feature AdminTools has a missing component.
MSI (c) (24:A8) [18:06:38:285]: Transforming table Binary.

MSI (c) (24:A8) [18:06:38:285]: Transforming table Binary.

MSI (c) (24:A8) [18:06:38:285]: Note: 1: 2262 2: Binary 3: -2147287038
MSI (c) (24:A8) [18:06:38:301]: Transforming table Binary.

MSI (c) (24:A8) [18:06:38:301]: Transforming table Binary.

MSI (c) (24:A8) [18:06:38:301]: Note: 1: 2262 2: Binary 3: -2147287038
MSI (c) (24:A8) [18:06:38:301]: Note: 1: 2262 2: Error 3: -2147287038
MSI (c) (24:A8) [18:06:38:316]: Transforming table Error.

MSI (c) (24:A8) [18:06:38:316]: Transforming table Error.

MSI (c) (24:A8) [18:06:38:316]: Note: 1: 2262 2: Error 3: -2147287038
MSI (c) (24:A8) [18:06:38:316]: Transforming table Error.

MSI (c) (24:A8) [18:06:38:332]: Transforming table Error.

MSI (c) (24:A8) [18:06:38:332]: Note: 1: 2262 2: Error 3: -2147287038
DEBUG: Error 2826:  Control BottomLine on dialog ErrorDlg extends beyond the boundaries of the dialog to the right by 5 pixels
The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2826. The arguments are: ErrorDlg, BottomLine, to the right
The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2771. The arguments are: AdminTools, ,
MSI (c) (24:44) [18:06:39:926]: Note: 1: 2262 2: Error 3: -2147287038
MSI (c) (24:44) [18:06:39:926]: Transforming table Error.

MSI (c) (24:44) [18:06:39:941]: Transforming table Error.

MSI (c) (24:44) [18:06:39:941]: Note: 1: 2262 2: Error 3: -2147287038
MSI (c) (24:44) [18:06:39:941]: Transforming table Error.

MSI (c) (24:44) [18:06:39:957]: Transforming table Error.

MSI (c) (24:44) [18:06:39:957]: Note: 1: 2262 2: Error 3: -2147287038
MSI (c) (24:44) [18:06:39:957]: Product: Microsoft Exchange Server -- The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2771. The arguments are: AdminTools, ,

Action ended 18:06:39: CostFinalize. Return value 3.
MSI (c) (24:44) [18:06:39:957]: Doing action: FatalError
Action 18:06:39: FatalError.
Action start 18:06:39: FatalError.
MSI (c) (24:44) [18:06:39:972]: Transforming table CustomAction.

MSI (c) (24:44) [18:06:39:988]: Transforming table CustomAction.

MSI (c) (24:44) [18:06:39:988]: Note: 1: 2262 2: CustomAction 3: -2147287038
MSI (c) (24:44) [18:06:39:988]: Transforming table CustomAction.

MSI (c) (24:44) [18:06:40:004]: Transforming table CustomAction.

MSI (c) (24:44) [18:06:40:004]: Note: 1: 2262 2: CustomAction 3: -2147287038
MSI (c) (24:A8) [18:06:40:019]: Transforming table Binary.

MSI (c) (24:A8) [18:06:40:019]: Transforming table Binary.

MSI (c) (24:A8) [18:06:40:019]: Note: 1: 2262 2: Binary 3: -2147287038
MSI (c) (24:A8) [18:06:40:035]: Transforming table Binary.

MSI (c) (24:A8) [18:06:40:035]: Transforming table Binary.

MSI (c) (24:A8) [18:06:40:035]: Note: 1: 2262 2: Binary 3: -2147287038
MSI (c) (24:A8) [18:06:40:051]: Note: 1: 2262 2: Error 3: -2147287038
MSI (c) (24:A8) [18:06:40:051]: Transforming table Error.

MSI (c) (24:A8) [18:06:40:066]: Transforming table Error.

MSI (c) (24:A8) [18:06:40:066]: Note: 1: 2262 2: Error 3: -2147287038
MSI (c) (24:A8) [18:06:40:066]: Transforming table Error.

MSI (c) (24:A8) [18:06:40:082]: Transforming table Error.

MSI (c) (24:A8) [18:06:40:082]: Note: 1: 2262 2: Error 3: -2147287038
DEBUG: Error 2826:  Control BottomLine on dialog FatalError extends beyond the boundaries of the dialog to the right by 5 pixels
The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2826. The arguments are: FatalError, BottomLine, to the right
Action 18:06:40: FatalError. Dialog created
MSI (c) (24:A8) [18:06:40:144]: Note: 1: 2731 2: 0
Action ended 18:06:41: FatalError. Return value 2.
Action ended 18:06:41: INSTALL. Return value 3.