[Bu11Sh0t]

pawn Код:

#if defined _ALS_OnPlayerKeyStateChange
#undef OnPlayerKeyStateChange
#else
#define _ALS_OnPlayerKeyStateChange
#endif
#define OnPlayerKeyStateChange OnPlayerKeyStateChangePRO

CALLBACK:  OnPlayerKeyStateChangePRO(playerid, newkeys, oldkeys)
{
    //Funcion
    return CallLocalFunction("OnPlayerKeyStateChange", "iii", playerid, newkeys, oldkeys);
}

Probablemente tienes en otro include definido el ExOnPlayerKeyStateChange, asн que lo cambie.