This is an old post, but I wanted to clarify for anyone else reading this as I am.
This is not a problem with just the GOG edition, its a problem with the digital version. The GamersGate edition has the same issue. (Says it is 1.69, but gives Silver Surfer skins.) I have not tried any advanced modules yet, so I'm unaware if that is also a problem, but I imagine so.
The above link by Kezardin is still active as of now, as is another one on a previous page. They lead to the same file. The patch installed perfectly and fixed the issue, even on Win 7 64bit.
Also, if you are having issues with the main menu being completely black, try running in compatibility mode (Win XP service pack 2). If the movies aren't showing up,
follow these directions. The .dll and disabling composition mode worked for me.
EDIT: The two fixes (for the movies and for the textures) work well independently, but installing the 1.69 patch buggered the movies again for me, and no amount of tinkering can get them working. Keep that in mind- if you want the movies to work in-game, you can't use the 1.69 patch, and vice versa. Of course, if you install the Bink viewer thingy (mentioned in the movie thread) you can watch the videos outside the game. Just minimize and watch the video, then return to the game.
Good luck fellow gamers!