The version before 530 I think?
530 has the "assist" and the 07 doesn't have it, it also doesn't have G.E (what was released at the end of 07 era) and construction working.
I've been playing it for the past 3/4 days, it's like a crazy house. Everyone is having trouble selling things because it's just began, they don't know where to start.
Kinda nice being the same level as everyone for once.
Thing I hate in 07, is the killer random events, literally. I was just minding my own business fishing in catherby. I look at another tab, look back and I'm dead... can't even survive doing a non-combat skill O_O