This happened to me during the first day of Early Access and just happened again. Both times power outtages knocked me offline and both times they've asked to do a first time setup and download the entire game again. What did they do to the game directory that it has to do this every time since I assume thats what its going to do from here on out. This was never an issue in Heavensward or in 2.0 for me, and I've gone through multiple power outtages with the game running.