one last problem (maybe lol)

hey guys id just like to say thanks for my last thread about installing 1.3 but now i think i only have one more problem when i created a server for the first couple of times everrything was fine but now after a couple of minutes the whole game shuts dont and says like bad index or something and a couple of other things and there no pint going on other servers yet because most of them i lag alot in the least i can get is the 200 mark so little help?

What is your Computer Specs? As in, how fast in MHZ, Memory, and what Video Mode you use within Half-Life / Earth's Special Forces? OpenGL? Direct3D? Software Mode? If everything is as it should be, attempted to re-install Steam, Half-Life and Earth's Special Forces?