I am using Mapnik 2.0.1rc0 on a Windows 7 with python 2.7 32bits inside a GeoDjango App using xml. The datasource come from spatialite 4.0. My tiling script can render polygon and point features correctly but linestring are just not displayed. The tiles are empty, without error. I can see the background of the tiles, but no trace of any lines when zooming in and out.
Does anybody have an idea what could be the problem?