I have not updated the game for a while… The green screen means that saved game has not loaded correctly for some reason (“corrupted save”). This sometimes happens late in the game - sorry for that.
It happens less often with the offline version of the game because it saves data faster.
In both versions, it is recommended to keep the game on for a couple of seconds (at the menu screen) after the “save and quit” button is pressed. Also, please don’t close the game right at the beginning of a new day when autosave happens.
Should be fixed in the improved version of the engine I am working on now.