What happened to that one was the unflattering drama of what stories to use for 7-9. There was a difference of opinion, it was pretty ugly, to say the least, and the book was scrapped. There were also other unsightly problems with that production in terms of battles over "irrational writing" that wouldn't shine the best light on pre-production or production. Lots of actors were asking, "Why is my character saying/doing this?" That's never good, because it points to larger systemic problems. Edit: Happy ending, though. Rinzler wrote a great book on THE MAKING OF THE PLANET OF THE APES and has another one coming out on THE MAKING OF ALIEN, which there is no reason to believe won't be superb as well. So his loss to Star Wars is still movie fans' gain.