This is strange. I'm almost positive that Brokami's mod wouldn't put anything into the overlay files. o-o
Overlay files control the text in-game. For example, if I went into the overlay file named 'charcreate' and opened it notepad, I could edit what things say in-game:
Anyways, (derp) all you can really do is reinstall FH. v.v Without the overlay files, FH cannot work properly and will not turn on.
But, I'm a bit confused. Does it say that access is denied for everything in FH? And what exactly did Norton say? Again, this is very strange. Last I tried installing Brokami's mod, Trend Micro Titanium blocked it and wouldn't let meh download it. o^o It said there were like, 8 viruses in it. o_o Which I highly doubt was true.
First try running FH as administrator. If it denying you access this should fix that. Next, restart your PC. If that doesn't work, I honestly have no idea. o-o
Try contacting Brokami if it gets really bad.
Lol, I'm so confused.
Gewd luck, Oreo! D: