One more thought on your problem: ?if you unplug and replug the Sprog to your USB port, do you get the pleasant sound telling you hardware has been removed/added? ?If yes, then check device manager again to see which port it thinks it is on. ?Then you can bring up JMRI and add the Sprog. ?Your description seems related to how the Sprog is attaching to the new computer. ?BTW, you say you ¡°set¡± the com port - you shouldn¡¯t have to do that as it is autmagically set by Windows.
Jerry
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