Most InstallShield packages contain a Windows Installer package ( .msi ) inside them.
Inside, he found the .cab files and the core executable: setup.exe . But there was something else. A file that shouldn't be there. A text file named manifest.log . A file that shouldn't be there
Optional troubleshooting steps I can try if helpful: in Windows Explorer and delete the contents
If the setup closes instantly, you can bypass the broken launcher entirely by extracting the files manually. error code 1628
in Windows Explorer and delete the contents. InstallShield extracts files here; if a previous attempt left corrupted data, it can prevent a new launch. Advanced System Repairs
Have you encountered another variation of this error (e.g., error code 1628, 1721, or 6003)? Those require a different approach—but for the symptom “launched but closed without finishing,” the guide above has a 95% success rate.