KF2 - Disk Error

Hello Friends,

I have the KF2 and had no problems in your installation.
but a friend with this a big problem.

After redo the downloadd twice, the same problem this to happen.
to download the end of the game when starting from a disk read error.

checking the problem by Content.log, the error said to be in the file
SteamApps> Common> KillingFloor2> Engine> Shaders> Binaries> ShaderComplexityAccumulatePixelShader.BIN

This file says is the error causing the Content.Log.

not is possible deleted. error corrupted occurs when trying to put it away.

if anyone can help me I will be very grateful.

KF2 - Disk Error