[mkgmap-dev] --Style-file -> Could not open Style

Hello, I am unable to get the new style-file option to work. I first processed my old map-features.csv with style.py into the new format. Then I tried basically everything possible to get it working, but I allways get "Could not open style-file mtb.zip" or "Could not open style-file d:\mtb.zip" Is this option really working? If yes please give an example of where and how to store the 3 files (POI,Polylines,Polygons) and how the respecting command should look like. Felix