Just reformated my system, reinstalled DCS and it runs fine but Tacview 1.7.0 will not install. I am getting the following error message:
Install Failed
Please ensure that you have enough access rights and free disk space before contacting the software manufacturer for assistance.
I did have windows change the location of my user,my saved games,apps folders to a drive other than C (D in my case). I read about someone else having a similar problem but they had a previous install that worked for them.