Cannot install 1.08 patch to 1.05

[eddo36 16]

I use windows xp 64 bit. I have installed direct x and activated the game. This is what it does when I try to apply the patch (and I have downloaded the same file from a number of mirrors and got the same problem)

Quote[/b] ]Please be patient. This update may appear to take a long time to complete. It is updating and installing very large data.

Sprocket Online Version

Verifying ArmA, version 1.08...

Error found in file Campaigns\ca.pbo (4c660143!=ff7ba030)

Some error occurred during patch installation.

Patch file is probably dammaged. You may need to download it again.

Error in file 1.08, phase 10.

Anyone know how I can apply 1.08 patch to my existing version?

[Mabes 0]

Have you tried uninstalling the ArmA, deleting all the leftover files off your computer (the main ArmA folder and the folders in "My Documents"), restarting and then reinstalling the game? I had that the first time I tried to install the patch, and the game got corrupted and the only way to fix it is to just to a reinstall.