Forgive me if this is the wrong place to post my question:
I installed TechWindow and I really like the improvement! Unfortunately, I installed it in my game directory, not a mod directory. Naturally, it worked just fine until I attempted to load a succession savegame and got the "locked assets" warning and the game exited.
Where can I find a copy of the original CvTechSplashScreen file? You guessed it -- I didn't make a backup copy when I installed; I just overwrote the original.