I just downloaded and am running a 32-bit version of Nagios XI (free version) on my Ubuntu desktop. It's running CentOS and has Nagios XI running on it ...but I'm getting a '404 Not Found' error on http://<ip address>/nagiosxi.

Has anyone else had this issue? I really don't have the slightest idea how to fix this problem. The Nagios documents don't say much except that it's supposed to be working and there was only one thread about this (that didn't work out for me) on the Nagios Forums....someone please HELP!