[OSM-newbies] only getting shapes; no roads, no names etc.

[Wim de Vries]

Hi,
I installed Mapnik successfully. I downloaded and 'osm2pgsql -m
netherlands.osm.bz' (from geofabrik).
generate_image.py and generate_tiles.py gave no errors.
I played with the zoom level. Still, I can only get shape images with some
vague lines, but no further details.
Did not find anything about this problem after googling for some hours.
Is there sth. wrong in the (generated) osm.xml?
Thanks.