this game got so many updates from steam in the 2-3 days it was release, it was crazy ...
it was 1.0.36 when it was released, then 1.0.37 in just a couple of hours, up to 1.0.40 - 1.0.41 - 1.0.43 - 1.0.46 - 1.0.47 the next day, now it's 1.0.51 - don't know if they still update the game like crazy today.
anyway - i'm guessing this is the original release, since it's reloaded version, if you wanna update but don't wanna download the whole thing from those RGs (they update their game like crazy, but theirs are larger - above 7 gigs if not mistaken) ... you can check out
http://cs.rin.ru/forum/viewtopic.php?f=10&t=63963&start=495 - haven't check with kaos version, but usually it worked ok, although their cracks are from 3dm ...