The "DX9" in the file name specifies that this trainer only hooks into the RE5DX9.exe process. If you launch the game in DX10 mode, the trainer will fail to find the game.

Removes screen clutter for a more cinematic experience. Compatibility & Technical Notes

Prevents herbs and grenades from being consumed. How to Install and Use

The existence and use of patches like the DX9 v100129 8 Trainerexe patched highlight the dynamic relationship between game developers and the gaming community. Patches, whether official or community-created, serve as a testament to the ongoing support and modifications that can extend a game's lifespan and appeal.

Does the trainer give a specific (e.g., "Game not found" or "Wrong version")?