This release - reliably detects a failure to register Scomm32, the component used to interact with serial ports - prevents opening a serial port from briefly asserting the port's RTS modem control signal by replacing Scomm32 version 9.1.1 with Scomm32 version 9.1.2; note that Commander may have to terminate and be restarted in order to complete this replacement (tnx to Salvatore I4FYV) - displays the installed version of Scomm32 at the bottom of the Configuration window's Ports tab - de-asserts RTS and DTR when closing a serial port - reliably terminates on receipt of a shutdown command from another application (tnx to Don WB6BEE and Joe W4TV) - supports the IC-910HA, which can be directed to switch between RX and TX via CAT command (tnx to Andrew G8GNI and Joe W4TV) Notes: 1. Terminate WinWarbler and SpotCollector (as well as Commander) before directing the Launcher to upgrade to Commander 12.4.5 2. After Commander updates SComm32 to version 9.1.2, WinWarbler will when next started use SComm32 version 9.1.2, eliminating the brief assertion of RTS when WinWarbler opens a serial port. For WinWarbler users who do not employ Commander, an imminent new version of WinWarbler will replace Scomm32 version 9.1.1 with Scomm32 version 9.1.2. 3. Anyone who modified Commander's radios.txt file by appending PTT=T to the IC-910H entry should set the Radio Model selector (Configuration window, general tab) to IC-910HA (my designation for the IC-910H variant that accepts a CI-V command to switch between RX and TX) 4. Update your firewall and anti-malware applications to consider this new version of Commander to be "safe" 5. If this upgrade doesn't work correctly, see the "After an Upgrade" section of 6. 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