There was an issue with the release builds for PC and Mac that prevented some players from starting the game. The error message they received was:
I'm sorry, but an uncaught exception occurred.
While loading the script.
Exception: Could not load from archive actions.rpyc.
The issue has now been fixed, and the download links have been updated to the new, working versions.
I apologize if you were affected by this. Please download the game again, and it should work for you now.