Update Manager Failure

I'm getting the following error messages in update manager

Software Subscription Status

Software Subscription: Recommended

Maintained in: \\server\SophosUpdate

Error Code: 00000002

Error Description: Could not read from the update source location

Outstanding Alerts and errors

Code 80080801 - Software update failed

Code 80040406 - Delivery failed for software subscription 'Recommended', Access to the source update location is denied or the location is otherwise unavailable

Code: 80040404 - Threat detection data update failed

The server is an air-gapped server and has the following shares comfigured

SophosUpdate - E:\Update Manager

UpdateManager - E:\Update Manager

For error code 80040406 I have attempted the following fix http://www.sophos.com/en-us/support/knowledgebase/66176.aspx

The logview is showing the following errors:

10/01/2013 13:48:04 Error Decoding of product release Sophos Update Manager version RECOMMENDED was not done because the synchronization failed. 10/01/2013 13:48:04 Error Version information for product 'Sophos Update Manager' was not gathered by dispatcher 'DispatcherPrograms-2013-01-10T13-48-02-1', as the last synchronization of that product failed. 10/01/2013 13:48:04 Error Decoding of product release Sophos Patch Server version RECOMMENDED was not done because the synchronization failed. 10/01/2013 13:48:04 Error Version information for product 'Sophos Patch Server' was not gathered by dispatcher 'DispatcherPrograms-2013-01-10T13-48-02-1', as the last synchronization of that product failed. 10/01/2013 13:48:04 Error Decoding of product release Sophos Enterprise Console version 0.0.0 was not done because the synchronization failed. 10/01/2013 13:48:04 Error Version information for product 'Sophos Enterprise Console' was not gathered by dispatcher 'DispatcherPrograms-2013-01-10T13-48-02-1', as the last synchronization of that product failed. 10/01/2013 13:48:04 Error Decoding of product release Windows Endpoint Security and Control version RECOMMENDED was not done because the synchronization failed. 10/01/2013 13:48:04 Error Version information for product 'Windows Endpoint Security and Control' was not gathered by dispatcher 'DispatcherPrograms-2013-01-10T13-48-02-1', as the last synchronization of that product failed. 10/01/2013 13:48:04 Error Synchronize operation failed when synchronizing product release 'Windows Endpoint Security and Control'. Details: Cannot create stream fa029446aec315089f873009cef7bda8x000.xml

Thanks

Garry