In very few cases, the 64 bit EyeTV 4 software for macOS can not start.
In this case you should delete all “*eyetv*.plist” files under “/Users/Shared/Library/Preferences/”, such as:
*.eyetv.devices.plist *.eyetv.plist *.eyetv.plist*
If you need support regarding your EyeTV product please do not hesitate to contact us following this link.