I didn't make it!
I am using a no cd crack and the game works fine. I try to use a trainer called S.T.A.L.K.E.R. COP Trainer +10_ but if the cd is not in the tray the trainer crashes. Does anyone know how to fix this or a trainer that works with the crack?
Most the trainers don't work real well. Make sure you have the trainer for the correct game version. There is currently no trainers that work well with steam. Most of the them are the same trainer from Cheathappens just uploaded to different sites. Many of them contain viruses etc. A few people claim they have them working with the steam version but I have not. Just better off modding the files you want to change.
I have played the game 48 times all the way through with about 15 or so different mods. Except for ammo reload times and animations - the time it takes to actually reload, most things can and have been modded.
Like said Fearless, you'd better look for some mods to get what you want instead of trying trainers that doesn't always work. And it's safer.