Help plx

2012.9.5 1333
build date : mon aug 27 0542 2012

os : windows7(32) 6.1 (build: 7601)
cpu : authenticamd amd phenom(tm) ii x4 955 processor @ 3211 mhz 4095mb ram
video : ati radeon hd 4800 series (1129) direct x version is 4.9.0.904
poscode : ls9(449) 0:0:0 4/0 [628]

assertion failed: inpos>=0 [file:..\..\core\inc\ffilemanagerwindows.h] [line: 185]

history: farchivefilereader::seek <- load l2compiledshader <- fd3dshaderarchive::load <- ud3drenderdevice::init <- ugameengine::init <- initengine

thats what i get after frost loads 100%

i never had this problem it happend today ... when i try to play i get this error dont kno how to fix it ...

 

fixed ...
i used ccleaner to clean registry and all that and then i download check4game.exe aaandddd clicked fix game on website and it works now

 

next time, if you'll have this error, try to delete l2compiledshader.bin from system folder and restart the game