I’ve tried importing the .blend files from Blender 2.62, but I’ve got 2 problems, number 1 is my model being rotated by -90 by default and that makes my scripts not work correctly. Number 2 is every time I instantiate a blender model it gets locked in position 0,0,0. How can I solve this?
Put all your objects on an empty ‘parent’ object, that has the correct properties relative to the scene. This should solve all your issues.