I was able to try the suggestion of looping the converter back on itself this evening.
When looped back the converter functions properly regardless of what I do with the throttle peddle but crashes again the moment I plug it into the serial connection of the controller.
New information that I didn't have before: I get the windows dingle when the serial communication fails as if I've removed hardware then a few moments later the complimentary dingle occurs indicating that hardware has been plugged back in.
Once motor speed returns to zero again I am able to re-open the serial port and see the data flowing from the controller.
Thoughts?
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