Good question, friend, and welcome to the forum.
Could be the snoring bug fix but I doubt it. A zip copy of the fixed file would be better than a save for that. I already employed the fix OBD put in the forums a ways back. If you need that one I can zip up a copy of the repaired file for you to drop in. The new update v0.9 will have that repaired file as well.
It may also be a save to mark the spot where
MC chooses JD's fate and whether to advance to the long game or take the short ending. I recommend saving at that spot and checking out the JD goes to jail/Joe Dirt optional ending then reloading again to the choice and going long. The long option is the main game path. Not 100% certain though... Dimitri will know, he's the dev after all.
Dimitri57, Hey boss, just need clarification on the dev file's purpose, please.
Adventure ever on my friends, Phat