for some reason its not opening for me, but i have it now nonetheless. If your new to blender not sure if you've used this but this helped me out a lot. http://en.wikibooks.org/wiki/Blender_3D:_Noob_to_Pro good luck
If you open the script in Python and go to the line where it says there's an error and it has 'as' in it then you are using the 3dgs version. switch it out to the gs version. hope that helps.