I'm working on it, I'll let you know when I have a fix
I've uploaded a new build, I've changed some settings and cleaned a couple of things that the game is not using. If it keeps crashing please send me the logs again. I've tested it in many different PCs and I'd no problem, so this might be something on your computer, like permissions, runtimes not installed or disk space.
The game has been working for me now. As you have denoted, it does get a bit buggy in the later levels past the final level 16 with cubes going off the conveyors, click and drag conveyors stops working, and cutter saws spinning with the wrong orientation (though that is just visually), but nothing that fully halts progress. Though, this was an older build.