davidpitt received kudos from Shincan in Failing to update Client Agent v6 to v7
Disabling HIPS has worked and Agent got updated.
Checking the policy, there are no special rules in place, other than 2 custom 'Allow' rules for LogMeIn and Hamachi.
All HIPS options are enabled and Filtering Mode is set to Automatic.
I'd prefer not to have to disable HIPS, wait for a restart, push out new agent, enable HIPS again on all devices if there is a fix for this issue?!?