rails port api troubles

Hello, I set up an osm server with rails port as per http://wiki.openstreetmap.org/wiki/The_Rails_Port using postgresql, only exception that I renamed my databases.

All worked well except one thing, if I do a GET require like
the server responses with just the header and no nodes. I checked the database and it is filled with nodes, I also get a valid response if I make a direct sql request.
So what I don’t understand is why the api replies with an empty file although the sql request is correct.

Maybe someone can help me…