Starting multiplayer problem, gMotor 2 Error, Error opening core shaders MAS file....

[spajk]

When I trying to start rFactor through Liveracers servers using JOIN button I get gMotor 2 Error, Error opening core shaders MAS file CORESHADERS.MAS.
In singlplayer game works perfectly!
Trying to reinstall Windows 7 and no fix.
Thanks for help.

Using rFactor from original DVD, version 1.255
Windows 7
nVidia GTS 250

Clear instalation config.ini
//[[gMa1.002f (c)2006 ]] [[ ]]
[COMPONENTS]
GamesDir=RFM\
SoundDir=GAMEDATA\SOUNDS\
VehicleSound=GAMEDATA\SOUNDS\
OptionsAnim=UIDATA\MOVIES\
OptionsFlags=GAMEDATA\NATIONS\
OptionsSounds=UIDATA\UISOUNDS\
OSCFile=UI.OSC
OptionsDir=UIDATA\
ReplayDir=REPLAYFRIDGE\REPLAYS\
ReplayPluginsDir=REPLAYFRIDGE\PLUGINS\
PluginsDir=PLUGINS\
MovieDir=MOVIEFILES\
TracksDir=GAMEDATA\LOCATIONS\
PitsDir=GAMEDATA\SCRIPTS\
VehiclesDir=GAMEDATA\VEHICLES\
DriversDir=GAMEDATA\TALENT\
HelmetsDir=GAMEDATA\HELMETS\
CommentaryDir=GAMEDATA\COMMENTARY\
CommentaryFile=COMMENTARYCZECH.INI
LogDir=USERDATA\LOG\
SaveDir=USERDATA\
MusicDir=MUSIC\
CameraEditorResourceDir=DEVFILES\CAMED\
ShadersDir=GAMEDATA\SHARED\
ControllerDir=USERDATA\CONTROLLER\
ScreenShotsDir=USERDATA\SCREENSHOTS\
SupportDir=SUPPORT\
LanguagesDir=SUPPORT\LANGUAGES\
LanguagesFile=CZECH.DIC
CPURating=4
SystemRAM=2048
VideoRAM=2539
ObjDetail=1
TexDetail=1
VideoGUID=D7B71E3E-4555-11CF-A177-48A31FC2C435
VideoDriver=0
VideoMode=61
VideoRefresh=0
WindowedMode=0
RunBenchmarks=1
FSAA=37
VSync=0
ShaderLevel=3
SubViews=0
WidescreenUI=1
MinimumVidRes=(800, 600)
MaximumVidRes=(8000, 6000)

[INSTALL]
InstallFrom=
InstallTo=

[VERSION]
Version=-1,000000

 

[redapg]

Do you have all components (mod(s)/track(s)) installed into your rfactor-installation which are installed on the server you try to join?