Hi
I made as well some small change to the script, I hope you don't mind.
Added support of saving the Export Property's to the Model.
If you cancel the export dialog or the save dialog the script stops instantly.
And reduced the filenumber padding to 6 numbers.
And my first Animation with Properanimation + SmoothstepAnim http://www.youtube.com/watch?v=agCUtjEJssM