Experience not working for 4.3

Hey all!
I have recently upgraded my license from 4.2 to 4.3. Since the upgrade any experience files I create will not work in experience.
Experience files I created previously on 4.2 are working fine but when I create the same file using 4.3 it will not load up in experience.
Any one else having the same issue or is there a bug with 4.3 ?