Puzzling behavior

Was debugging some code today that was working on a windows box, but was not working in a Linux box.

class MapController
 model :Roads

 def draw_roads
   render :text => "No Routes to show" if no_roads
 end
end

On the linux box, draw_roads would always look for a draw_roads.rhtml template and go ahead with the execution. Whereas in a Windows box, the check would be performed and accordingly a render of "No Routes to Show" would happen or draw_roads.rhtml would have gotten rendered.

After some debugging and placing of puts statements in the code figured that the issue was with the

 model :Roads

bit. It should have been

 model :roads

But still not sure why this worked on a windows box and not a linux box !!