I'm running R1.5.0, and it works on WSJT-X no problem for me. Here's a screenshot of my settings:
I've also used R1.5.0 with fldigi. I've attached the XML file (FT-817.xml) to this message, and here's a screenshot of my settings:
Your COM ports may vary, but with these settings, I'm able to use both programs via CAT. Here's a short video of me demonstrating that I can control the radio from each program, as well as have changes on the radio reflected on the programs: https://youtu.be/LkVwPr9ZumA
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