Problem with virtual hosts

Hi,

I set up virtual hosts on ubuntu 12.04. But not everything is going as it should. I have two files in sites-enabled. One file holds the code for one site, and it works, one for a dozen other sites, and they work also. Except now I try to add another one to the second file, and the site cannot be found. Strangely enough, the first site in that file is also the site that is visible when I go to the ip of my server 188.226.137.114, skyo.be. The code is always the same:

<VirtualHost *:80> ServerAdmin webmaster@localhost DocumentRoot /var/www/skyo/public_html ServerName www.skyo.be Serveralias sky.be Serveralias www.skyo.be ErrorLog /var/www/skyo/logs/error.log Loglevel warn CustomLog /var/www/skyo/logs/access.log combined <Directory /var/www/skyo/public_html> AllowOverride All Order allow,deny allow from all </Directory>

</VirtualHost>

This is the first site in that file, when I put another site above this code, this site is visible on skyo.be. So is the new site I wanted to add. So I can access the site, all the redirections work.

I know this is kind of a mess, I would like to have different files, so for each site one file in sites-available instead of one (strangely enough the second file works). I followed the tutorial on creating virtual hosts:https://www.digitalocean.com/community/tutorials/how-to-set-up-apache-virtual-hosts-on-ubuntu-12-04-lts

Does anyone have an idea how to get this fixed?

thanks!!