Server info: Windows 2003 64bit SP2, VM

Attempting to update from 10.3.0a to 10.3.1 using built in system update tool.

It looks like the update has partially installed however in the Deploying System Updates section in ZCC there is a failed message:

“This device was unable to rebuild the deployment packages. Check the loader-messages.log on the device for more details.”

In the loader-message.log file there are messages which say “Unable to extract content”

The server has been rebooted and I have attempted to redeploy the update which then results in the same error messages.
We are also experiening an issue with patching not working. We assume this is related to the above.
many thanks