(e) OK, it seems I had two panels -- one now deleted. But still no joy. Here is part of the log file:
2019-10-28 17:35:08,614 apps.Apps???????????????????????????? INFO? - PanelPro version 4.12+Rb6a9bb1 starts under Java 1.8.0_221 on Windows 7 x86 v6.1 at Mon Oct 28 17:35:08 CET 2019 [main]
2019-10-28 17:35:18,302 apps.Apps???????????????????????????? INFO? - Starting with profile My_JMRI_Railroad.3e941fb0 [main]
2019-10-28 17:35:18,614 node.NodeIdentity???????????????????? INFO? - Using jmri-i7dpid3EbhOiaaWbE8LE61-3e941fb0 as the JMRI Node identity [AWT-EventQueue-0]
2019-10-28 17:35:18,879 xml.AbstractSerialConnectionConfigXml INFO? - Starting to connect for "LocoNet" [main]
2019-10-28 17:35:19,347 apps.PerformFileModel???????????????? INFO? - Loading file C:\Users\Lucas\JMRI\My_JMRI_Railroad.jmri\UserPrefsProfileConfig.xml [main]
2019-10-28 17:35:22,873 util.FileUtilSupport????????????????? INFO? - File path program: is C:\Program Files\JMRI\ [main]
2019-10-28 17:35:22,873 util.FileUtilSupport????????????????? INFO? - File path preference: is C:\Users\Lucas\JMRI\My_JMRI_Railroad.jmri\ [main]
2019-10-28 17:35:22,873 util.FileUtilSupport????????????????? INFO? - File path profile: is C:\Users\Lucas\JMRI\My_JMRI_Railroad.jmri\ [main]
2019-10-28 17:35:22,873 util.FileUtilSupport????????????????? INFO? - File path settings: is C:\Users\Lucas\JMRI\ [main]
2019-10-28 17:35:22,873 util.FileUtilSupport????????????????? INFO? - File path home: is C:\Users\Lucas\ [main]
2019-10-28 17:35:22,873 util.FileUtilSupport????????????????? INFO? - File path scripts: is C:\Program Files\JMRI\jython\ [main]
2019-10-28 17:35:23,512 PanelPro.PanelPro???????????????????? INFO? - Main initialization done [main]
2019-10-28 17:35:39,518 managers.AbstractTurnoutManager?????? ERROR - Invalid system name for turnout: LT1 needed IT [AWT-EventQueue-0]
2019-10-28 17:35:39,518 configurexml.ErrorHandler???????????? ERROR - Unexpected error (Exception) while load(/C:/Users/Lucas/JMRI/My_JMRI_Railroad.jmri/John's%20Control%20Panel.xml) in adaptor of type jmri.jmrix.loconet.configurexml.LnTurnoutManagerXml Exception: java.lang.IllegalArgumentException: Invalid system name for turnout: LT1 needed IT
See http://jmri.org/help/en/package/jmri/configurexml/ErrorHandler.shtml for possibly more information. [AWT-EventQueue-0]
java.lang.IllegalArgumentException: Invalid system name for turnout: LT1 needed IT
Strangely, the turnouts are now called ITLT1, etc., but still no details, so loconet still not connecting to the DCS51. How to I force it to do so -- i.e. with what startup file?