Definitely a bug. I'm not sure why this is happening, it only seems to be happening to a select few. Is your Flash able to save enough data? Right click the game, go to settings and then see if the data allowed to be saved is at the max value. Our game saves a ton of data and it may even be more than a MB which I believe is the default data allowed.
None, and I just realized I missed a great opportunity to become rich.