Installer error: “Another instance of setup is already running”

Please follow these steps:
- start the installer,
- when you encounter the error, do not close it. Leave the error on screen,
- go to “Windows Task Manager” and look for the setup process in the “Processes” tab.
- Sort the processes by “Image Name”, and look in the sorted list. The process should have the name of  your package file. There should only be one. Please send a screenshot with the process list in “Windows Task Manager” so we can further investigate the issue.
- also, are you running the installer from a removable media? If so, what media?

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