I've noticed similar errors. "Menu" not opening, missing some of the dialogue between missions. Right now, I'm unable to access level 2, even after completing the level for the access codes. It almost seems like some of the game elements aren't loaded into the program. I downloaded everything and followed the instructions to access "index.html", which opens the program in browser, but it's like part of the game wasn't downloaded. Not sure what the issue might be.