So, I've downloaded the game, and the Critical Rebuild Patch, and I'm running into a strange issue.
When I'm making a character, everything is fine, but I can't actually see the aesthetic options I'm changing. Hair, head shape, skin colour, tattoos, etc. -- nothing shows up in the preview box.
I can get into the game just fine, and I see my character normally there, but I can't tell what I'm making him look like.

Short of constantly going into the game to see if I like this character or not, is there a way to fix this?

I'm running on Win7 64-bit.
I've got the Critical Rebuild Patch.
I'm running as Administrator.
I'm running in WinXP SP2 compatibility mode.

Specifically because of this post:
http://www.gog.com/en/forum/neverwinter_nights_diamond/customization_issues_with_color/post33

Hunh. Don't have the missing customization options, but lo and behold I get the shiny skin/no color problem. Hey GoG...you did test this on Win7 x64, right? Jeez. Off to see what the critical rebuild does...364MB we shouldn't have to load (mutter mutter)

Interesting. I've done a reinstall and applied things bit by bit. The base game, it works fine. With the Critical Rebuild Patch it works fine. So this means that it must have been how I installed the graphical enhancements from this thread that mucked it up.
Okay, narrowed it down further. Specifically it's the NWShader enhancement that is breaking it.

I have the same issue with an invisible character but I have NOT installed any graphical enhancements. I have tried both with and without the critical rebuild patch. Tad bit annoying.

Ahhh this is a video driver and game incompatibiity issue, or it was when it happened to me acoupe of years ago. There's a few ways to solve it, but the best one is of course to download new drivers.

If it doesn't work (and it took a while before I found one for that od computer that worked well), there's a few options.
1: Go to video settings ingame and play with "show environmental effects on character"'. Might cure it or it might make your character invisibe ingame as well. Depends how lucky you are *grin*.
2: Create your character in http://nwvault.ign.com/View.php?view=modules.detail&id=4215[PGCC[/url], ignore how they look on creation and use the ingame appearance changer in the module to do your appearance and then save him/her and start your game with this premade character.
3: put this wonderful Character customiser in your override and you can adjust your appearance on the fly in any module that doesn't have a special crafting conversation.

Ultimate link list

Have fun :)

I encountered this problem just now.

If you're using an ATI card, my solution was to reenable Catalyst AI. I had to disable it to quit the flickering/glitching that occured on Infinity Engine games like PST and BG1/2, but to make the character models appear in NWN I had to reenable it. Hope this helps.

Thanks a lot. Combined with installing the 1.69 HotU Patch, this fixed it for me. Everything working as intended now.

Just searched around for a solution to this problem (just recently got the GOG version), and that did it for me too. Thanks a bunch!

What about Nvidia chipsets? I'm still stuck with my shiny golem-like character...