Flashover MegaSector 1.0.1 has released. It's a relatively small update, but what was changed was new content of a sort. Mainly, the updated has added an option to select fancier backgrounds.
Enjoy!
P.S. Sorry about the "missing executable" error for a few minutes there when trying to launch the game from Steam, that's on me for not actually remembering to rename the EXE. Reminder to self to not be stupid next time. That being said if you still get one, check the game folder, the EXE is probably actually still there.