I have to think that some of the "the trainer doesn't work right for me" cases across various games has to come down to differences in setups that make trying to perform the same memory alterations problematic across the whole of possible configurations. But what do I know, I've made only a few trainers in my life and I bought this membership for life because I greatly appreciate the work that goes into keeping such a wide variety of games up to date and working - even if there is an occasional hiccup.
I solved this problem by going to this page:
Download the topmost game fix here, and replace the rage.exe file in your Steam folder with the rage.exe file from this package. No other files are needed.
An another problem I encountered was that keyboard input weren't always picked up by the trainer. I solved this by pressing SHIFT+TAB to bring up the Steam overlay. Sometimes I will have to press the button several times to activate the trainer, but at least it worked.
I also recommend backing up the exe-file so that you can put it back when we get an updated trainer for the latest version of the game.
I'm still going to have to try some things to get it up and running properly, but your advice was definitely a step in the right direction. Thank you, stigrv.
Disable the cheats when loading a new level ?. I never experienced a crash with the game so it kind of is new to me but you should always disable cheats when loading a new level with most games.
firewall and other security software.
on trainer and game.
version and distribution.