What do you think now, Charles?
I think that Ron deserves a lot of thanks from the computer chess community for his work on his Computer-Chess Wiki pages and providing the information to us, and he also deserves thanks for his freely given chess engine - Horizon.
Since Dann Corbit did at one time provide a lot of chess engines, that he (Dann Corbit) did compile, for download on his web pages it would be very easy for anyone to read the below Rybka forum thread and come away with the idea that Dann Corbit had also compiled those Rybka engines that he once provided for download on his website.http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=9971
The same would be true of the below Winboard forum thread in regards to Jim Ablett. Since Jim Ablett once had a web page where he provided a lot of chess engines for download that he (Jim Ablett) did compile, it would be easy to get the idea that Jim Ablett had compiled those Rybka engines.http://www.open-aurec.com/wbforum/viewtopic.php?f=2&t=52710
I think that Dann Corbit only "hosted" the free Rybka engines in 2009 and didn't compile them. What happened in the above Rybka forum thread is that Dann Corbit said he had the earlier Rybka engines in his possession and so volunteered to host them and he was given permission by the Rybka author to do so.
If Jim Ablett or Dann Corbit had ever had all of the source code to all of those Rybka versions so that they could compile them, either one of their names would have come up in the Rybka investigation as a person that once had the source codes; even if either one of them had said something like - Yea, I had the source codes but destroyed them after I compiled the engine(s). But, as far as I remember, neither one of their names came up in the investigation as people that once had Rybka source codes in their possession.
In the below Talkchess thread Dann Corbit wrote in reply to someone that he didn't have the source code to a particular Rybka version.http://www.talkchess.com/forum/viewtopic.php?topic_view=threads&p=118151&t=13716
I believe all of the Rybka versions were, and I'll say it without really knowing for certain, compiled by the Rybka author.
In the past I had a few private message and e-mail exchanges with Ron so I know that he is a good guy and I know he likes to be accurate on things. Like I wrote above it was an easy error to make, and definitely not end-of-the-world stuff.