Help me please

well, I have a problem with warrock when being installed are a few mistakes
Cannot extract a target file StaticMeshWVehuckeWHel_Hind_Wheel_F.pkf,
cannot extract a zip file pf_0_25.zip and
cannot extract a zip file sometimes pf_0_26.zip

My antivirus is NOD32 version of warrock I have is 20081102
helpme please

(Sorry for my English)

hmm restart the download or your computer and try again?

i dont get it. Do you wanna say, that those files got virus, by your program, or those files are gone. P.S, dont worry about that.