Right now, I'm mostly putting out feelers to see if anyone's having similar issues. I've only had one play session with NMS and when my timer was up, I wasn't able to play as the game seems to error immediately.
I tried another game (Hardspace Shipbreaker, if it matters) and it booted up fine, so I'm not sure it's on my end. No Man's Sky seems so far to be doing it exclusively.