Codeigniter Tank auth installation

I'm having some problems with Tank Auth. Although i followed th开发者_如何学Pythone instructions from here when i try to connect in the login_form i get a redirect in http://example.com/auth/login.

I assume i can change "example.com" with my domain but i can't find where. The other thing is that captcha is not showing.

I suppose i have to learn only from the examples coming with the installation?

Any help is appreciated.

Here are some (more detailed) instructions on getting Tank Auth to work in CodeIgniter: http://expertnotfound.wordpress.com/2011/01/20/setting-up-tank-auth-2/

(Sadly it does not seem to be 100% compatible with CI 2.1.0. But it still made a difference for me...)

You're right, there is no 'example.com' in the latest version of Tank Auth. Have you changed the base url in the CI config file? Its at ./system/application/config/config.php the line

$config['base_url'] = "http://example.com/";

Whats wrong with capcha? Have you set up all of the directories for your images?