I wrote specifically why it's retired in the replies to the people who requested an update
"This title has been retired. It has patched multiple times in the short time we have had the trainer available, and each time the changes to the underlying game engine are so massive that it required 12-13 hours to remake the trainer. Since less than 100 people (really less than 75) even bothered to download the trainer in the last several months, this trainer/game is retired. This title is not popular enough, and the developer is radically changing the engine so often that we cannot spend this kind of time updating it over and over."