There is a way around the md5 crash.
go into modded option, set the game time to 40 mins
All other setting whatever u want
Jump into the game and play till 4am, at 4am log out of the game and restart the game
And repeat.
If you watch the weather by 4am, once 4am goes by, the weather stays dark foggy and doesn't become clear skies for the next day.
It's Something with the weather and playing longer than 40 mins that,
The game doesn't want to refresh