nik2img.py render test error. Help me

Hello I am contacting from Mongolia. Thank’s your help.
i am trying create local transport map like http://openptmap.de/ and i am following this http://wiki.openstreetmap.org/wiki/Openptmap/Installation#Render_the_Tiles lesson.
I have one problem on step 3.2 Render the Tiles. if know solutions help me. I am beginner and my English sow bad sorry.

pt@ubuntu:~/mapnik$ nik2img.py /home/pt/mapnik/mapnik_pt.xml image.png -c 106 47.9 -z 10 -d 800 400 --no-open -f png256
Traceback (most recent call last):
File “/usr/local/bin/nik2img.py”, line 238, in
main()
File “/usr/local/bin/nik2img.py”, line 228, in main
nik_map = ComposeDebug(mapfile,**options.dict)
File “/usr/local/lib/python2.6/dist-packages/mapnik_utils/composer.py”, line 263, in init
Compose.init(self,mapfile,**kwargs)
File “/usr/local/lib/python2.6/dist-packages/mapnik_utils/composer.py”, line 69, in init
self.build()
File “/usr/local/lib/python2.6/dist-packages/mapnik_utils/composer.py”, line 280, in build
builder = super(ComposeDebug,self).build()
File “/usr/local/lib/python2.6/dist-packages/mapnik_utils/composer.py”, line 113, in build
self.map = builder.build_map(self.width,self.height)
File “/usr/local/lib/python2.6/dist-packages/mapnik_utils/loader.py”, line 124, in build_map
self.load_mapfile(m)
File “/usr/local/lib/python2.6/dist-packages/mapnik_utils/loader.py”, line 116, in load_mapfile
load(m)
File “/usr/local/lib/python2.6/dist-packages/mapnik_utils/loader.py”, line 74, in load_xml
return mapnik.load_map(m,self.mapfile)
RuntimeError: Required attribute ‘type’ is missing in PolygonPatternSymbolizer in style ‘landuse_overlay’