Thanks for the bug reports!
DirectX not launching is weird, I’ll investigate it. I know for some people, it’s the only backend that works for them so I can’t really remove it.
The save files bug is new though, but I think I know why it happens. The fix will be live in the next update. In the meantime, you don’t have to delete your saves, close the game and start it again, as long as you don’t load an old save you will be able to start a new game properly.