When I went to install both the DX11 patch, and High-Resolution textures patch, I got this error: http://i851.photobucket.com/albums/ab80/Mikefosho/Error.png

Afterward, it proceeded to install, and it seems to have worked.

What does this error code mean, and it will affect my gameplay/patch differences?

My guess is that this won't affect your gameplay at all. If the game runs you're all good.