Warrock Installation Extracting?

[British_Command]

Whenever I try to install the Warrock updates, after I have installed warrock on the computer, then I click on the WRLauncher.exe, which does anb update. But it has said on 2 of my computers (one with XP, one Vista) that it cannot extract this file [PF_0_7.zip].

Please help me I have tried it several times, and some people have said try 'run as administrator' done that, I have tried deleting the version.cfg file aswell.

Any Help Appreciated,
British_Command