Program won't start. No messages shown, nothing happens at all

On the Macintosh, this happens if you try to install Harmony Navigator on MacOS X 10.3.9 or earlier. HN however requires at least MacOS X 10.4 Tiger or later. On a Windows PC, this behavior may point to another (possibly crashed) instance of the program still running invisibly in the background. Please open the Windows task manager and terminate HN.exe (or SynfirePro.exe). This should free up all locked files and resources.

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