If SmartSteamEmu.exe is inside your game folder:

[Launcher] Target = StartIn = You need to fill these out correctly. You have two options: (recommended) or Relative Paths . Option A: Absolute Paths (Most Reliable) This method works 100% of the time, regardless of where you move the launcher.

If you are a gamer who uses custom Steam emulators for preserving or testing offline game backups, you have likely encountered the SmartSteamEmu (SSE) tool. While powerful and lightweight, it is notoriously finicky regarding file paths.

Test your paths in Windows Run dialog before launching SSE. If they work there, they will work in SSE.

Target = Full path to the game .exe (with quotes if spaces exist). StartIn = Full path to the folder containing that .exe .