Life can get SO frustrating! I downloaded a Steam copy of SH3 a short while back, and put GWX on the Steam copy and all was fine. Today I wanted to change the crew to speaking German, and that setting crashed the machine before the game loaded - perhaps I should have altered the config in the game folder and not the document folder - so I decided I would start over. Downloaded a fresh copy of SH3, validated it and went to put GWX on again. No mods in games folder, but the GWX mod insists it can detect mods in there and will not continue the install. WhaddoIdo? I looked on web and other folk have had the same problem, but I did not find a solution. Sob....
I would like to have found a solution - but have managed to get the DVD version to install, so am on again, with GWX and German voices - yay!