Hi Compupix,
First of all, let me clarify that it’s not a FileVoyager behaviour. It’s driven by Windows.
If you are using Windows 10, there’s a setting where you can configure the action Windows will take when opening a removable media. Search for “Autoplay” in your start menu, you’ll land on this screen:
Select “Take no action” in the drop down lists and you will not be nagged anymore.