Что за проблема в Call of Chernobyl ?

вот лог:
Expression : hdr
Function : CLocatorAPI::LoadArchive
File : LocatorAPI.cpp
Line : 383
Description : assertion failed

stack trace:

001B:005594CA xrCore.dll, CLocatorAPI::LoadArchive()
001B:00559045 xrCore.dll, CLocatorAPI::ProcessArchive()
001B:00558D1C xrCore.dll, CLocatorAPI::ProcessOne()
001B:00558A73 xrCore.dll, CLocatorAPI::Recurse()
001B:00558139 xrCore.dll, CLocatorAPI::_initialize()
001B:00566239 xrCore.dll, xrCore::_initialize()
001B:74335DDA uxtheme.dll, Ordinal45()
001B:7743BBBC USER32.dll, DefWindowProcA()
001B:7743BB87 USER32.dll, DefWindowProcA()
001B:7743BB87 USER32.dll, DefWindowProcA()
001B:774625AD USER32.dll, RemovePropA()
001B:77465C67 USER32.dll, DefDlgProcW()
001B:77457206 USER32.dll, DefDlgProcA()
001B:7744C4E7 USER32.dll, gapfnScSendMessage()
001B:7743BB87 USER32.dll, DefWindowProcA()
001B:7744C641 USER32.dll, gapfnScSendMessage()
001B:77444F0E USER32.dll, GetScrollBarInfo()
001B:77444F19 USER32.dll, GetScrollBarInfo()
001B:7744C641 USER32.dll, gapfnScSendMessage()
001B:7744C5FE USER32.dll, gapfnScSendMessage()
001B:0F58ED79 MSVCR120.dll, _crtFlsGetValue()
001B:0F58F8C7 MSVCR120.dll, wcsnlen()
001B:0F5D852C MSVCR120.dll, fcloseall()
001B:0F59E99F MSVCR120.dll, qsort()
001B:0F59F41C MSVCR120.dll, sscanf()
001B:0045E53F xrEngine.exe, ComputeModuleHash()
001B:0045F466 xrEngine.exe, InitSound2()
001B:0046B1A3 xrEngine.exe, CApplication::load_draw_internal()
001B:7615ED6C kernel32.dll, BaseThreadInitThunk()
001B:7756367A ntdll.dll, RtlInitializeExceptionChain()
001B:7756364D ntdll.dll, RtlInitializeExceptionChain()