Hi Dave,
just reinstalled PF3 and all my flightsim stuff onto a brand new HP Omen I5 with Nvidia 950M graphics, after installing everything I get the following message when I try to validate my files.
Error in the "ValidateNow" routine!
Err:76 Desc: Path not found Loc:0
I haven't had any error messages as far as I know, any log files you need..just shout!