W4U2 issue HTTP POST not allowed

Hi...

When i try to access HelloWorld (localhost) application with developer user the HTTP 403 error appears as Rui's Video, but when i try to acces with Administrator user i get the following error:

HTTP Status 405 - El Metodo HTTP POST no es soportado por esta URL

type Status report

message El Metodo HTTP POST no es soportado por esta URL

description The specified HTTP method is not allowed for the requested resource.

Rui's video show that "Hello administrator" message must appears but get that error.

I appreciate any help... thanks !!!