When up grading to V 6.0 of Piwik GeoIP was deactivated as Piwik said this version of the plugin was not compatible with V 6.0. I then up graded to V 6.1 and after that downloaded and installed the latest version of GeoIp from the ticket page. I simply over wrote the plugin files. GeoIP stopped working. I then deleted the GeoIP plugin folder and uploaded again along with the latest map from maxmind. Still not working, anyone with the same problem?
PS - I still can read the past data in GeoIP, so that works.