There is a setting in sitecore/includes/Sitecore.Analytics.config
<!-- MAXMIND SECURITY TOKEN
Security token from MaxMind.
Default: "00000000"
-->
<setting name="MaxMind.SecurityToken" value="00000000" />
Set the value to your purchased license (using a patch:config).
http://www.theinsidecorner.com/en/Marketers/SitecoreDMS/EngagementAnalytics/MaxMindSettings