Felix,
Here's the lines I had to comment out:
# route1=ferry { name '${name1}'; set toll=yes }
[0x06 road_class=1 road_speed=0 resolution 18 continue]
# route=ferry { name '${name} ferry' | 'ferry'; set toll=yes }
[0x06 road_class=1 road_speed=0 resolution 18 continue]
route1=ferry are ferries from relations.
I can't see what's wrong at the moment. In your style file do any other
rules match the ferry route (will any other lines be output for it?)
It seems that there is a problem if you output two times a routable
object. I removed the "double ferry" action and at that place it
compiled fine. It would then crash here however: