Make sure you have selected CSS or any other Source game and restarted the game - those props ahead are HL2 and L4D so you're fine in that regard. In any case, check your Options > Multiplayer and have the "Allow all custom files from the server" set.
Make sure you have selected CSS or any other Source game and restarted the game - those props ahead are HL2 and L4D so you're fine in that regard. In any case, check your Options > Multiplayer and have the "Allow all custom files from the server" set.