Files are different from the server.

Good day.

After uploading DLC and playing few game, when i tried to get in not DLC maps, I've got this msg "Files are different from the server."
And i cannot connect, but DLC maps works fine.
And also some problems with searching... it's stars to search for to long....
I didn't use any kind of textures hacks or something else.
Also tried to verify game files, it's has check everything and it sais 0 files were corrupted.
P.S.
Does some one else have same problems?any advice?

yup I do so does my buddy and he doesnt use any kind of texture or hack

Tried to Verify the files?
And see if that solves it?

(Tutorial on my YT Channel if needed.)

Else, that's something else they bugged :P

in "solved" i didn't see any solution. exempt to try to verify files.

Strange things, if DLC enables and I get in old maps everything work's fine. but if i turn of DLC get in game and error comes out...
But with enabled DLC i can't found old maps to play.

even if you verify it works for 3 games then it says it again

I try to make a back up in steam of my game.
So, you can make all game you want, but never in groups with someone who havn't the DLC.