Login administration

I installed to guestbook version 2.3.4. I do not obtain to have access using area of administration = test password = 123 Recebo the following message:Fatal error: Cannot instantiate non-existent class: gb_admin in /home/cumplic/public_html/mural/admin.php on line 51

Try redownloading the guestbook from this site and replacing all files except admin/config.inc.php

Funcionou perfeito você é um gênio.
Muito Obrigado por pela ajuda.
Sou Brasileiro, desculpe o inglês usei um tradutor.

You functioned perfect you are a genius. Very obliged for its its aid. I am of Brazil I used translating forgives the English.

When somebody signs the book the email address appears thus: solteiraolageano(at)hotmail(dot)com
It could inform me where I must move?
Adress: http://www.cumplicceswingclub.com.br/mural/index.php

dot ?
at ?

Thx

I instelei the same and made all the tables normally so in the hour of logar in the administration part I speak that the password and login this making a mistake because?

(at) and (dot) can be found in gb.class.php

did not understand therefore the archive guestbook.sql this in txt oq I I make with it?