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PGA450 GUI cann`t open when evm usb interface inserted

dear 

    l plan to use PGA450 in UAV application ,so l bought the PGA450Q1EVM-S User's Guide and TIDA-00151 UART Demo Instructiona and tiger board ; l donwnload the PGA450Q1EVM GUI v1.50.1 ; but when l connect the usb into my pc, the GUI cann`t open, when l pull out the usb; the GUI can stant;

use another PC ,the same situation;  what`s the reason ?  what `s the difference of PGA450Q1EVM GUI v1.50.1 and TIDA-00151 UART Demo Firmware for PGA450-Q1 v2.6 ? my application is uav; l just want to test TI ultrosonic sensor first ?  so confused,need your help to make ti work firsr ! thanks