I have done what I believe is a simple install and followed all of the configuration instructions to the letter. I must have missed something as I cannot get the login page to function at all. I get a 404 error on login every time. I am new to php and am a little green in this type of code. I get the following error in the url line upon login. Can someone please help?

http://xx.xx.xx.xx/CDRTool/<?php%20print%20$this->url()?>