Alright one more thing, _sprint.gsc is not linked anywhere in my mod but is one of the files modified on my server and the person did download it without even previously guessing other names, he did not download the stock scripts just the modified ones.
As well the directory I've posted from the log file is not the actual one that I use.
So disabling the old download system would solve the issue?
Edit: Might it be a server break-in or any other form of hacking? Not really involving downloading those files via CoD2 but still being restricted to only download files from this server directory?