This release - sends correct CI-V commands to transceivers and applications connected to the Secondary CAT port when running on Japanese versions of Windows (tnx to Yoshi JG7AMD) - when controlling a TS-590SG, doesn't clear filter selectors on receipt of an EX command unless the filter mode reported by the EX has changed since the last report (tnx to Ruben EA5BZ) - properly polls the unselected VFO in an IC-7300 (tnx to Tom KQ5S) - enables selection of COM ports 1-64 (tnx to Joe W4TV, John VK2PY, Ruben EA5BZ, Salvador EA3KZ, Andrea IU4DEG, Dan KC2STA, Steve K5FR, and Tom KQ5S) - does not hang when a USB serial port adaptor or radio with a USB interface loses power; when power is restored, clicking the Reset button on the right side of Radio panel on the Configuration window's General tab will restore communication with the radio - is not sensitive to the serial port driver defect that causes previous versions of Commander to report an 8020 error code Notes: 1. Depending upon the version of Windows you're running and the level of security you have configured, upgrading to Commander to 12.4.5 may cause the Windows "User Access Control" (UAC) subsystem to seek your permission for changes to be made to your computer. The specific change being made is the registration of a new component that Commander uses to access serial ports. If this request appears on your monitor, the upgrade will not proceed until you respond. 2. Update your firewall and anti-malware applications to consider this new version of Commander to be "safe" 3. If this upgrade doesn't work correctly, see the "After an Upgrade" section of 4. After upgrading, to revert to the previous version of Commander, see Commander 12.4.5 is available via the DXLab Launcher and via 73, Dave, AA6YQ