Hm, it’s strange. I’m not sure about Chiken, but you can try to use YABEE with Blender > 2.5 (I recommend latest 2.62). YABEE can export NURBS with two or more nodes, however limitation about non cyclic NURBS is still in force.
Add: also may be useful the links below to understand the NURBS behavior in the Panda
[Bug with NURBS Knots)
[evalTangent)