We're not discussing the Steam version here. The problem is that none of the trainers work with the non-Steam version of the game. This has been mentioned several times throughout the thread, and PWiz already noted they're not going to try any further to train the non-Steam version as they already tried thrice.
I was hoping originally for a cheating-solution to come via modding, however some posts made me wonder if people who didn't have the Steam version managed to get the trainer to work.
As for modding, people at the Xentax forum are working on extracting game files, however it seems it will be some time before any cheating is made possible, if it is made at all.
Chris, LA Noire is the first of your trainers that has not worked for me. I have the correct patched version of the game and trainer. I tried all the tips in your troubleshooting guide and still can't get the trainer to "activate". Any ideas? Thanks and Happy Thanksgiving. Jim