js1138, I was relying on a later source: Information Theory, Evolution, and the Origin of Life, which Yockey published in 2005 (Cambridge University Press, IIRC).
My understanding is that in his latest book he is silent on the posibility of abiogenesis, saying simply there may be things we cannot know. Hardly the same thing as saying it is impossible.
More interesting, until I hear from him directly, is his conclusion on evolution:
"Regarding ID he comments that, according to information theory, 'Once life has appeared,... genetic messages will not fade away and can indeed survive for 3.85 billion years without assistance from an Intelligent Designer'"
http://www.amazon.com/Information-Theory-Evolution-Origin-Life/dp/0521802938
You will note that he restates the proposition that the origin of life is not relevant to the way it behaves once it exists.