STALKER Clear Sky crack problem

[yannara]

I have a small problem with Clear Sky, I asked about it first at another forum, and there I was told, that this must be occured, because I use no-dvd file. I have 1.5.0.5 version patched.

Problem is, that every time I come next to the hurted fighter, and push enter (to give him a medkit), the game crushes on desktop. A bug detector starts and shows me this log: "xrEngine.exe caused BREAKPOINT in module "F:\S.T.A.L.K.E.R. - Clear Sky\bin\xrCore.dll" at 0023:00E0B924, xrDebug::backend()+164 byte(s)

My question is, that is this because of the no-dvd file, or something else?