Hello everybody, I'm using CW USBTAP.When i download the code in the program memory by Freescale codewarrior,it shows "CCS:UES open failure",but i can see “codewarrior use tap” in the Device manager,why it happens "CCS:UES open failure"?Please help me a

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Hello everybody,   I'm using CW USBTAP.When i download the code in the program memory by Freescale codewarrior,it shows "CCS:UES open failure",but i can see “codewarrior use tap” in the Device manager,why it happens "CCS:UES open failure"?Please help me and thank you for your answers.