I'm addicted to this game too, been playing it for years.
Load the game from a .d64 file, there is a directory in the .d64 file for the saved game data and this is where the autosave is saved at the end of a season or whenever you choose to save the game. Once the game quits after season 1 reload the game and say yes to 'Do you wish to play an old game'.
I use Power 64 on a mac and it runs perfectly, not sure about other emulators and platforms.