The CEO of the company is a nightmare, and the people right below him in chain of command are also a little nuts. There's a lot of really talented people there, but zero direction for people, so you're really just left to fend for yourself. This could work for some people, but it didn't work for me.
There was also a lot of internal political crap. Some of the people in leadership there lack diplomacy and tact, and one of them actually went as far as to have a personal vendetta against colleagues. It was incredibly unprofessional and created a pretty hostile environment to work in. The CEO lacks the ability to direct, and also has trouble articulating exactly what he needs from the people that work for him. This led to a lot of wasted time on stuff that never went anywhere.