L4D Crash Course/The Passing not fully downloaded into game

[ncs926]

Whenever I try to play either of the DLC on PC, the levels are not fully loaded. Not only that but the movie poster that displays right before the level is pink and black squares. Any ideas?

[Rayman1103]

Verify your game cache, and see if it fixes the problem.

Support Article: Verifying Game Cache Files (GCF)