Hi Thanks for the reply,
My OS is Win 10 ver 1709, build 16299.98.
So far support have suggested retrying with AV and firewall disabled, I tried this but got the same results, installer hangs then says not responding. Yesterday I did receive an email saying they have escalated the issue.
I am currently trying your suggestion of run as admin, AV/FW disabled and another install dir, deleted the old one and let the installer create a new one but this appears to be doing the same thing. Will leave it running for a while to see if it bursts into life.
Thanks,
Dave.