C'est la version communautaire, tu as fais quoi exactement comme installation ?
Running eXo Platform™ Ultimate - Community Version is really an easy game.
Here are the steps to get you up and running in less than 5 minutes:
1. Install Java SE 1.5+
2. Go to OW2 Forge download page. Select the last eXo file for tomcat in the "eXo Ultimate WebOS" section. It should look like: exo-eXoUltimateProduct-rXXXXXX-tomcat.zip where XXXXXX is depending on the version you want to download.
3. Unzip that package under a path that does not contain any space (in windows).
4. Go to the bin/ directory that will be extracted. There, run the command :
windows: eXo.bat run
linux and Mac OS: ./eXo.sh run
5. Login as the administrator using the username "root" and the password "exo".
6. Enjoy the eXo style and knowledge !