I have been attempting to build a network analysis based on GTFS data for the Netherlands. I have obtained this data from transitfeeds.com (OVapi GTFS for the Netherlands), and am working with Esri's Add GTFS to a network Dataset extension (http://www.arcgis.com/home/item.html?id=0fa52a75d9ba4abcad6b88bb6285fae1). I have managed to Generate to transit lines and stops, but when I try to use the tool to Generate Stop-Street Connectors I repeatedly receive a message saying that "The spatial index grid size is invalid".
I have deleted and recreated the spatial index as suggested by Esri (http://desktop.arcgis.com/en/arcmap/10.3/manage-data/geodatabases/modifying-a-spatial-index.htm), but it does not solve the problem. All features related have the same spatial index, both before and after this recreation.
How can I solve this problem?