Platform troubleshooting
From Amahi Wiki
To diagnose issues with the platform, the first step is to look at the platform log:
Fedora
tail -300 /var/hda/platform/html/log/production.log | fpaste
Ubuntu
tail -300 /var/hda/platform/html/log/production.log | apaste
It's possible that /etc/http/conf.d/10*.conf files are wedging the web server (httpd/apache) configuration. Restart apache and check the error_log (/var/log/httpd or /var/log/apache2).