[admantis]

add this

pawn Код:

new string[72];

above format line


EDIT:
Add this

pawn Код:

public OnPlayerConnect(playerid)
{
    new string[128], name[28];
    GetPlayerName(playerid, name, sizeof(name));
    format(string, sizeof(string), "* %s has joined the server.", pname);
    SendClientMessageToAll(0xAAAAAAAA, string);
    return 1;
}