As others already said, map.osm can be loaded, but the Make Roads Button has no effect.

The log says this:


okButton_eventClick

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

OSMInterface() constructor call

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

ArgumentNullException: Argument cannot be null.
Parameter name: buffer
at System.IO.MemoryStream..ctor (System.Byte[] buffer) [0x00000] in <filename unknown>:0
at (wrapper remoting-invoke-with-check) System.IO.MemoryStream:.ctor (byte[])
at Mapper.OSM.OSMInterface..ctor (Mapper.OSM.osmBounds bounds, System.Byte[] nodesXml, System.Byte[] waysXml, Double scale, Double tolerance, Double curveTolerance, Double tiles) [0x00000] in <filename unknown>:0
at Mapper.MapperWindow7.okButton_eventClick (ColossalFramework.UI.UIComponent component, ColossalFramework.UI.UIMouseEventParameter eventParam) [0x00000] in <filename unknown>:0
at ColossalFramework.UI.UIComponent.OnClick (ColossalFramework.UI.UIMouseEventParameter p) [0x00000] in <filename unknown>:0
at ColossalFramework.UI.UIButton.OnClick (ColossalFramework.UI.UIMouseEventParameter p) [0x00000] in <filename unknown>:0
at ColossalFramework.UI.UIInput+MouseHandler.ProcessInput (IInputTranslator translator, Ray ray, ColossalFramework.UI.UIComponent component, Boolean retainFocusSetting) [0x00000] in <filename unknown>:0
at ColossalFramework.UI.UIInput.ProcessMouseInput () [0x00000] in <filename unknown>:0
at ColossalFramework.UI.UIInput.Update () [0x00000] in <filename unknown>:0

(Filename: Line: -1)