When I am claiming winning tile on pure one suit, the game seem to freeze. I think that's the triggering condition since this happened on two separate occasion. Thank you for making this game!

thank you for the info. I tried to win 1suit by claiming, but didnot get the error. will keep looking at it.

I finally located a bug in the hongkongo3 rule and fixed it. Hope it was the bug mentioned above! cheers