Build CMS in Codeigniter - requested url not found

Hello there,

I’m doing the ‘Buil a CMS in Codeigniter’ course and i’m having a major problem. I’ve done everything from googling, reading post on the codeigniter forum, and downloaded the course files but the problem remains. I’m writing the url on the browser (localhost/sitename/class/method) but i’m getting a ‘url not found’ warning.
The url i’m trying to access is ‘localhost/sitename/admin/dashboard/’, relative to the lesson on styling the admin panel. I’ve done everything i can, but cannot solve this. Any ideas what might be wrong? Again, i’m using the source files provided by the course.