After rename the safe file and start the trainer indeed i get trainer activated ,but if run then the game even if i have closed trainer i only get black screen ,anny sugestions what i do wrong or what i need do now?
The trainer and the game are still working fine without any black screen. Maybe you should run an game cache integrity check via the Steam client or uninstall and install the game again.
Another good idea might be to wipe/clean your cache/Windows temp folder, reboot your PC and try again.