If you are using Window Defender Antivirus (Windows 10), update it to its latest malware definition in https://www.microsoft.com/en-us/wdsi/definitions before installing or upgrading to Commander 15.6.8 This release - correctly disconnects from an S.A.T. box when another primary transceiver is selected (tnx to Tom NY4I) - doesn't open the Secondary or SO2R CAT ports unless they are enabled (tnx to Phil K4PWS) - works around the documentation errors in the K4's documentation of the IS CAT commands, which control the K4's SHFT (tnx to Gordon N1MGO) - supports the definition of up to 10 bands below 1 MHz in the DefaultBandSegments.txt and BandSegments.txt files (tnx to Jim AB3CV and Joe W4TV) --- updates the VFO A font color to indicate whether the transceiver's current frequency is in-band or out-of-band --- displays the band name in the Main window's VFO panel - updates the Configuration.htm documentation file Notes 1. Update your firewall and anti-malware applications to consider this new version of Commander to be "safe" - 0 of 68 antivirus scanners accessible via Virus Total detected malware - 0 of 14 antivirus scanners accessible via Jotti detected malware - submitted for online analysis by Microsoft Windows Defender: no malware detected 2. If this upgrade doesn't work correctly, see the "After an Upgrade" section of http://www.dxlabsuite.com/dxlabwiki/ApplicationStoppedWorking 3. A screen shot showing Commander's Spectrum-Waterfall windows when controlling an Elecraft K4 is here: https://www.dxlabsuite.com/commander/Help/K4%20Spectrum-Waterfall.jpg Commander 15.6.8 is available via the DXLab Launcher and via http://www.dxlabsuite.com/download.htm 73, Dave, AA6YQ