I posted my files here:
It says something about
[Error] NotFoundError: DOM Exception 8: An attempt was made to reference a Node in a context where it does not exist.
You must be having more than one element with the same name while creating the composition in the first place.
So, open the composition in the Edge Animate version on which it was created, and then search for such two elements, give them different names.
Then open it with newer version. and things should work fine.
Let me know if it doesn't help.