My xray.log keeps logging the fault reference:.....

FATAL ERROR

[error]Expression : hFile>0
[error]Function : FileDownload
[error]File : E:\stalker\sources\trunk\xrCore\FS.cpp
[error]Line : 106
[error]Description : c:\program files\thq\s.t.a.l.k.e.r. - shadow of chernobyl\gamedata\config\

stack trace:

.....This message will now constantly repeat filling up the log to a size of about 1.25Mb!!!!!!!!!!!!

Can somebody tell me what I've done wrong please....

Hardware:
Dell Precision 690, Two Quad Core Intel® Xeon® X5355 (2.66GHz,1333MHz,2x4MB Cache) 1KW. 4GB DDR2 667 Quad Channel FBD Memory (4x1GB)
256MB nVidia Quadro FX3500 x2.