In message <ad48ea09...@btinternet.com
ROD will probably contact you for the debug file.
Network apps would include anything that is in your startup boot sequence,
like LanMan98, Hermes, Access Shares, etc. since they might be trying to
access the internet/network while it's trying to install the new software.
So temporarily stop them running at startup. then try the install.
But what error are you getting and when, we might be able to assist in
resolving the issue.