Enterprise Console 4 Deployment to Windows 7 PC's

Most of the PC's and laptops in our organisation are Windows XP. We have recently started to introduce Windows 7 and I have found that I am unable to deploy Sophos AV to these machines from the Enterprise console. It just quits very early with an error Code 000002e The installation did not start. The computer may have shut down, renamed ......... etc

I can manually install the Sophos on the PC directly from the server share, but I'm sure there should be some way of remotely deploying.

Thanks in advance for any help

Gerarde