Fred Fleuren wrote on Apr 6^th, 2015 at 12:54pm:

I haven't 777 Captain Base pack version 1.4 and cannot download it in my profile. I still have version 0.1 when I purchased it back in 2011. How can I update to v1.4 so I can obtain v1.6? Any advise would be greatly appreciated. Fred

I think you need to go to "Extended Download Service" on the first support page you get after logging in.  That should get you 1.4.  Then follow Mark's post to get 1.6.