Recently, I textured pink and blacks out on the bodies, clothes, bears heads into walls, shields, etc ... I have some mods that improve first, but frankly did not give me these textures pink and blacks. How do I fix?

I screen i start play and look is normal texture:

[img]http://i48.tinypic.com/2l8ym3c.png[/img]

[img]http://i47.tinypic.com/34y21ys.png[/img]


When I start playing the textures remain normal, but after a while begins to become black or even pink. But not only the Mods but also the texture vanilla type floors and not use any mods that change floors, rocks, etc ...
I have 2 GB RAM and then use GIMP to lower the texture resolution to 1024x1024, this is what happens after a while.

[img]http://i48.tinypic.com/11t3cy9.png[/img]

[img]http://i50.tinypic.com/1gn2fl.png[/img]

I use GIMP when I do this: Image -> Scale Image, then export the file by replacing the original, then I do "Generate mipmaps" and then save. I do this procedure when there are only files over to my RAM that is 2048x2048. Maybe I'm wrong something? Thats is For example, the Mod "Accingite Shields" has the file "shield.dds" to 2048x2048 instead "Shield_n.dds" is 1024x1024. And then I just edit the file "Shield.dds" because have 2048x2048, so I have to also change "Shield_n.dds" from 1024x1024 to 512x512? Could this be the cause or not? If it may be because the texture makes vanilla the same color pink?

And i have crash sudden without Reason.