World in Conflict

Hey, i got a problem.
I got from my friend a World in Conflict game all joined allready (my friend joined it allready on his comp.) with install and data file.
When i trying to install its saying me to download an additional file.
Im click “OK” and its downloading file what is allready in folder.
PS. im tried to unjoin the data file thats 3GB to 2 parts for 1GB like an orginal files before split.
PS 2. im using Windows XP
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Answer #1
put .001 after WICSetupData -> WICSetupData.001 (the file that is 3754350kb big)
maybe that helps
Answer #2
nope, same error :/
Answer #3
when you download the missing file it is bigger or smaller or the same as the file in that map already ?
Answer #4
i dont know.. cuz when i downloading it there are nothing in folder just Data and install, theres no new files