Having not used FSX and REX for a number of years, I last night installed FSX and REX Essential+ (latest version available for download from flightsimstore.com).
When starting a flight I kept getting "the weather could not be loaded" error message and was not entirely sure the textures had installed properly, as they didn't really look any different to default FSX.
After a quick google search, I discovered that setting FSX and REX to run as administrator cured the weather error message, and I was 100% sure the textures were installing properly, as there was a night and day difference visually.
Now, having read recommendations in the user manual and forums more carefully, I have also discovered that you recommend disabling UAC - in fact the manual says it MUST be disabled.
Therefore, I would appreciate it if you could clarify some things for me, bearing in mind both programs are installed in their default folders:
1) Is it possible for REX to give the impression that the textures installed properly when they didn't? Before I enabled both programs to run as administrator, the textures appeared to install fine without any kind of error messages, but there appeared to be no difference visually in flight.
2) Is running both programs as administrator a suitable substitute for disabling UAC (essentially enabling REX to communicate properly with FSX installed in the default Program Files (x86) folder)? If not, what else will disabling UAC allow? FSX and REX appear to be communicating properly after I enabled them to run as administrator.
Apologies if I waffled, but I want to be 100% sure that REX is functioning as intended.