prevent error centring 3D map on nonexistent system
prevent error centring 3D map on nonexistent system

vendolis/EDDiscovery,mwerle/EDDiscovery,vendolis/EDDiscovery,jgoode/EDDiscovery,jgoode/EDDiscovery,jeoffman/EDDiscovery,mwerle/EDDiscovery,jthorpe4/EDDiscovery,jeoffman/EDDiscovery