Okay, this is definitely an error I've never encountered before. Could you tell me what device you played it on and whether it was the browser version or the downloadable version?
Okay, I know what's causing it now. The problem is that the "Quiet" button is programmed to close the application, but since there isn't an actual application to close within the browser, everything freezes. It is best to exit using the browser's "go back" option; however, I will see if I can fix that issue. Thanks a lot for letting me know.