Blender and Collada

As a warning for all of you, the Blender collada export script is really buggy when it comes to parenting objects and transformations. Some version will effectively export the transformation twice, making your object move/rotate/scale twice as far as they should. Other versions, completely ignore the parent object's transformation (if you parent a box to an empty, and rotate the empty, the box will be exported as if it never moved at all, which is clearly bad)

If at all possible, use our Blender ase export script instead.