alvaro Monigal

Hello all.. Think i missed something in the process.. but i can't find what i am doing wrong... I made an simple mesh for an cabin , 4 walls, door , window roof...and i also made another model with planes for the physical shape in blender. But when i upload the physical model it appears inside the bouncing box rotated 90 degres.. not matching the structure of the mesh. In blender both structures are aligned.. I am using blender 2.58 with the default collada export. tks for any help Alvaro