Half-Life 2 error "couldn't open..."

[strictlyamd]

Like so many people on here, half-life 2 doesn't seem to want to work for me. I got to the part in beginning after you get the crowbar and get by the combine soldiers. As you do down those stairs after this, it starts to load the next area (supposedly), but it kicks me back to the main game menu with a black background. When I check the console, i see this at the end:

Spawn Server d1_canals_01: [trainstation_06-canals_01]
Begin loading faces (loads materials)
End loading faces (loads materials)
Loading game from //MOD/SAVE/d1_canals_01.HL1...
ERROR: couldn't open.
execing skill.cfg

Host_Error: CMapLoadHelper::Init, map models/props_combine/combine_train02a.mdl has wrong identifier

Anyone ever gotten this before or know what the problem is? I paid for game I would like to be able to enjoy it.

 

[Blackhawk@halfli]

try to reinstall

i think the combine_train02a.mdl model file is damaged,
did you download the game or do you used the cd version?

 

[strictlyamd]

I downloaded it. This is the second time i downloaded it since i had problems the first time as well.