Missing road data from PNG rendered with Mapnik

[Christopher Poenaru]

Hello,

I am trying to use Tilestache to serve PNGs rendered with Mapnik.

I setup Mapnik, constructed an XML and tested it out. I'm able to generate an image that I was expecting (see below). 

However, when I run this in Tilestache with the same XML file I am not able to see any of the road data that I was looking for (just the blue map background). 

Here is what the image looks like when rendered with Mapnik: 

and code I used to render this:  

import mapnik

mapfile = 'styles/osm-bright/OSMBright/OSMBright.xml'

m = mapnik.Map(2000,1000)
mapnik.load_map(m, mapfile)

bbox = mapnik.Box2d(-80.6, 43.5, -80.46, 43.43)  # 00
m.zoom_to_box(bbox)

mapnik.render_to_file(m,'waterloo_osmbright.png', 'png')
exit()

I've attached the XML I'm using for mapnik. Here is my tilestache config:

{

  "cache":

  {

    "name": "Disk",

    "path": "my_cache",

    "umask": "0000",

    "dirs": "portable"

  },

  "logging": "debug",

  "layers":

  {

    "roadquality": {

      "provider" : {

        "name": "mapnik", "mapfile": "/home/christopher/mapnik-stuff/styles/osm-bright/OSMBright/OSMBright.xml"

      },

      "projection": "WGS84",

      "metatile":

      {

        "rows": 4,

        "columns": 4,

        "buffer": 64

      },

      "preview":

      {

        "lat": 43.4720,

        "lon": -80.5291,

        "zoom": 15,

        "ext": "png"

      }

    }

  }

}

Has anyone experienced this before, or could potentially point out something I'm missing?

Thanks!