S.T.A.L.K.E.R.: Shadow of Chernobyl

When I'm looking at the list of network games, it gives me a version mismatch error for versions 1.0006 and 1.0004, but when I downloaded the 1.0005 to 1.0006 incremental patch and run it, it tells me that I already have 1.0005 and that no update is required.
there are hardly any servers running 1.0005, but I'm kind of clueless on how to get the 1.0006 patch since it's not seeming to work? I tried downloading from Fileplanet and Gamespot, but its the same file on both.