Its working fine for us man ,Tried re downloading the cracker might be cause its getting complicated with the methods!
403 = Server closed connection. So it it means AQW blocked your IP for few minutes. You will get this error if you try to crack account that have been locked for
10 minutes. And the problem might be that your cracker just continues trying new password for the account, even tough its locked. Fix that so it will never get that error again .