Codeworks install fails on 'download update lock'

I am trying to install codeworks.
I have tried with the installer which comes in the extras folder of the Unreal engine version. Version 4.20 which should have installed 1R6 I believe.
I have tried legacy version 1R6
I have tried the decompressed 1R7 on the google drive
I have tried logging in and getting the latest 1R8.
All fail at the same point on a Windows 7 machine and a Windows 10 machine. Both have admin privileges, spare capacity and have downloaded many applications before now.
Error in CodeWorks.log is
E: fopen failed, errno = 2

Have I picked a bad day and some server is down somewhere or am I missing something obvious and crucial?
Thanks for any help you can proffer.
Glyn Hodges.