Problemas ao instalar vb 4.2.2

Saludos amigos, al instalar la versión vb 4.2.2 me sale una serie de errores que no me deja conectarme al panel de administración ni visualizar bien el foro, sale esto:


Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. Please use the date.timezone setting, the TZ environment variable or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Chicago' for 'CST/-6.0/no DST' instead in ..../includes/functions.php on line 4912

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. Please use the date.timezone setting, the TZ environment variable or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Chicago' for 'CST/-6.0/no DST' instead in ..../includes/functions.php on line 5104

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. Please use the date.timezone setting, the TZ environment variable or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Chicago' for 'CST/-6.0/no DST' instead in ..../includes/functions.php on line 5104

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. Please use the date.timezone setting, the TZ environment variable or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Chicago' for 'CST/-6.0/no DST' instead in ..../includes/functions.php on line 5104
Unable to add cookies, header already sent.
File: /home1/magic1fj/public_html/includes/class_core.php
Line: 5755

Podrían echarme una mano?, las gracias por anticipado.

Buenas amigo revisa estos temas, te van a servir: vBulletin 4.2.2 FULL has been released. - vBulletin Community Forum y Common Issues 4.2.2 - vBulletin Community Forum

Gracias amigo, lo tendré en cuenta, por ahora voy instalando la actualización anterior.

Para solucionar tu error :

Abre el archivo "class_core.php" que se encuentra en la carpeta "includes" donde esta instalado tu foro.

Ahora, abres el archivo y te situas en donde dice:


Y añades las siguientes lineas:



Con eso se deberia de solucionar ese error.

Saludos.