Did a reinstall as suggested (actually a repair) and got the following error message
Did a retry but this also failed had to click the Ignore button a number of times before it would progress.
Once the VM had rebooted I tried running the Check Point Client again and got the same error message as before.
Also checked the registry key to confirm that I was able to access and edit it.
So not sure why the installer could not do this.
I would raise a ticked with support but I don't have an association with an account. We work with DXC New Zealand who say that they do have a service account with Check Point. Will see if I can get on there account.
Regards,
Gerard