I just purchased the Lonesome Road DLC for New Vegas (Steam). It is the only DLC I have purchased so far for the game.

No matter the graphic settings, all of the in-game textures seem to be stuck on low. I can not seem to locate a fix for this either online, or myself, so I am posting here hoping it's a know issue that I am simply overlooking.

Prior to the DLC, this was not a problem, the last time I played New Vegas was about two weeks ago. I have made no hardware changes to my system in that time and I am running the latest video drivers for my hardware.
I run the game at 1080P, Ultra, 8x AA, 15xAF. Was never a problem until today.

Windows 7 Ultimate 64
AMD Phenom II X6 1090T @ 4.1GHz
16GB A-Data 1600G XPG Gaming Series DDR3
2x XFX Radeon 6970 2GB Reference (Crossfire currently disabled, same issue)

Thanks in advance for any insight into my little issue.