This version - with "use multiple monitors" enabled, relocates to the primary monitor any window that isn't being displayed on a monitor - works around a Microsoft OS version reporting defect so that Windows 10 is properly reported in errorlog.txt file startup headers Notes: 1. Update your firewall and anti-malware applications to consider this new version of Pathfinder to be "safe" 2. If this upgrade doesn't work correctly, see the "After an Upgrade" section of 3. After upgrading, to revert to the previous version of Pathfinder, see Pathfinder 5.1.0 is available via the DXLab Launcher and via 73, Dave, AA6YQ