An "80%" (Number varies depending on who you talk to) complete version was leaked by a beta tester/reviewer, but by this point the coding was so convoluted that the game was bloated and generally unplayable, and it was ditched.
AJ later went and fixed up some problems with 1.2e and released it as 1.3.
I had the 2.0 as a kid, can't remember too much about it.
Actually, flicking through 1.3 now, maybe I've got that wrong, because it's a lot more complicated than 1.2e. Anyone with a better memory than me clear this up?
1.3 is an enhanced and recoded version of 1.2e, allowing for more promotions and so forth, it also generates new workers as the game progresses. I'm not sure what the installation problem Huntsman has been having stems from, its usually just a case of a corrupted download.