Moonlight Mahjong

Love this game it is challenging, but quickly played.
However, every now and then it causes my Mac 10.6.8 to freeze ? , screen goes either a dark blue or can be striped vertically in various colours. The only way I have found to get things going again is to disconnect the power , reconnect and then start the machine again. No warning of any problem comes before this happens. Think some small update is in order, otherwise a great game.

warwick lady about Moonlight Mahjong, v1.0.0