Fallout: New Vegas patch 188.8.131.522
Fallout: New Vegas patch 184.108.40.2062 was released on February 21, 2011 for the PC. It primarily adds add-on compatibility, and does not directly modify the game's resources; rather, the patch updates the game engine itself.
It is unknown at this time what specific bugs or other issues were addressed by the patch. It is probable that crashes relating to items being added to Form Lists and Leveled Item Lists by scripts were addressed, but this has not yet been confirmed.