i have a problem, witch seams to be the same problem like the problem from Dan. Updating Piwik from Piwik 3.1.0 to Piwik 3.1.1, I get the following warning/failure:
WARNING: /analytics/core/SettingsPiwik.php(246): Notice - Undefined index: enable_internet_features - Piwik 3.1.1 - Please report this message in the Piwik forums: http://forum.piwik.org (please do a search first as it might have been reported already).
I dissabled all plugins from third party, But the problem still remains. The homepage is hosted by domain factory. I’m using php 5.6. I don’t use the IP2Location plugin. I’m using the standard location detection GeoIP (php). I can’t deactivate this.
Thanks for your reply. It solves my problem. I reinstalled piwik and I entered in the config.ini.php file the line “enable_internet_features = 1” (between the rows “trusted hosts” and “Plugins”) . Now Piwik works good.