Don't you need to specifically denote C++ Development Environment via command line to install Visual Studio with that primary functionality? Otherwise it installed the default .NET Web and .NET Desktop Development Environment? I thought you had to specifically specialize .NET Office or C++ development environment via? And if you're on Mac, you can't do anything but build in the .NET environment. I remember specific installation directions when I was trying to pickup C++ modding for games.
Looking through Windows error log, when Terragen does successfully install it removed vc++ and reinstalls it, as well as vc++ additional, whatever that is.
The issue I narrowed down to Synapse Display Driver and it's use of the .NET framework, but it also uses VC++, so this is probably where the conflict is happening. I don't know what Razer is expecting of VC++.
What I ended up doing is reinstalling VC++ and restarted, so far no error, and both TG and Synapse crap is running without error.
If you can PM me a link to the frontier 4.5 again though I wanted to check to see if the installer still complains about Visual Studio already being installed and quits. Thank you.