Good Morning Mark,

I have read your reply and I did go back and check both Windows Defender Firewall and Kaspersky Quarantine vaults. To my surprise both programs had attacked the CS757 download as a Trojan. I was quite surprised since I have never seen Kaspersky react to a new FSX Add-on with such speed. Funny because it accepted CS777 and the CDU cnx as friends.  ;D
It may have something to do with how Windows 10  operates (new PC).
I tagged the download as a trusted program and voila, CS757 III with ACE is installed.
I will now take it for a systems check and see if all works as expected.

Thanks.