Hello!
Oh no, a wild bug appears oh noooo. Hahaha don't worry, we'll get you back running in no time!
I couldn't recreate your specific problem, but I implemented a couple highly probable fixes and prevention against this bug.
Please, be sure to backup your save files, you know, just in case (the "save" folder inside the "www" folder in the game directory).
Also, let me know if it worked and, if it didn't.
Oh, by the way, I'm glad you've been enjoying the game!
Thanks!