Map different from server error

I didnt find a help topic to post =/

Im with this error that says my map is diferent from server. Can someone tell my how to fix it? thanks



CAsyncWavDataCache: 3092 .wavs total 0 bytes, 0.00 % of capacity
Error! Variable "$blendframes" is multiply defined in material "particle/smoke1/smoke1_add_nearcull"!
Map does not match the version on the server.
(String table differs)




Host_Error: Disconnected


CAsyncWavDataCache: 3092 .wavs total 0 bytes, 0.00 % of capacity
Error! Variable "$blendframes" is multiply defined in material "particle/smoke1/smoke1_add_nearcull"!
BinkOpen( d:\games\left 4 dead 2\left 4 dead 2\left4dead2\media\l4d2_background05.bik )

 

Hey,

I got this problem before but I can't remember why.
Either way these are a few simple troubleshooting steps you can try for general problems :
1. Restart the game, and try again.
2. Restart steam and make sure you have the correct game version.
3. Check the integrity of your game. (properties of the game)

If none of these work, we will try to look into it more thoroughly

 

if a game restart don't work for me, complete system restart ALMOST always works. . .

 

there was an update last night. so maybe he doesn't have the new update yet?
or server wasn't update that time and he did have it.

but i guess he dont have that problem now anymore