The bins are not named properly
Yours says S.T.A.L.K.E.R._-_Call_of_Chernobyl_setup.exe-1.bin. Remove the .exe from the bins
We are not sure why the host is renaming the setup. In the future we are doing away with the installer and Call of Pripyat check. We didn't want whoever is the copyright holder for S.T.A.L.K.E.R. to come after us for releasing, basically the game for free. But really I don't think anyone cares right now.
"I have a dream that one day this community will rise up and live out the true meaning of its creed: "We hold these truths to be self-evident; that all mods are created equal."