CCS/EK-TM4C1294XL: An error occurred while soft opening the controller.

Tool/software: Code Composer Studio

Never had success connecting to this Tiva C Series LaunchPad, need help...

[Start: Spectrum Digital XDSPRO USB Emulator_0]

Execute the command:

%ccs_base%/common/uscif/dbgjtag -f %boarddatafile% -rv -o -F inform,logfile=yes -S pathlength -S integrity

[Result]

-----[Print the board config pathname(s)]------------------------------------

C:\Users\HZJ0RQ\AppData\Local\TEXASI~1\CCS\
ccs930\0\0\BrdDat\testBoard.dat

-----[Print the reset-command software log-file]-----------------------------

This utility has selected a 560/2xx-class product.
This utility will load the program 'sd560v2u.out'.
E_RPCENV_IO_ERROR(-6) No connection: DTC_IO_Open::dtc_conf
Download failed for file C:\ti\ccs930\ccs\ccs_base\common\uscif\xds560v2.out

An error occurred while soft opening the controller.

-----[An error has occurred and this utility has aborted]--------------------

This error is generated by TI's USCIF driver or utilities.

The value is '-250' (0xffffff06).
The title is 'SC_ERR_ECOM_EMUNAME'.

The explanation is:
An attempt to access the debug probe via USCIF ECOM has failed.

[End: Spectrum Digital XDSPRO USB Emulator_0]