cldllsclientdll

Uh.....I click on servers and I get some error saying .dll [cl_dlls\client.dll] differs from the server. I have seen some solutions on the forums like installing 1.2.3 which I do have and either stop trying to play servers that dont use 1.2.3. I clicked ever server and got the same error is it...

hey everytime i try 2 get on a server this message appears and its says this Your .dll [cl_dlls\client.dll] differs from the server's and then it doesnt allow me 2 play its been happenning for a long time and i dont know how 2 fixe it, i even tried 2 reformate my computer it still doesnt work...