Looks like it was a bad USBport on my PC. I moved to another USBPort and it is working fine. I have used the "bad" port with other devices with no issue. Also strange that even when using the Ethernet port on the J-Trace, the "bad" USBPort still gave me problems.
I have installed J-Flash V6.46i. When the J-Trace Pro is connected via USB, my Windows 10 64-bit PC's mouse becomes very slow or unresponsive. This occurs even when not running any Segger applications. Anyone else see this? Windows 10 insists the best driver is installed (WinUSB.sys).