MSP-GANG can't download code into MSP430F4152 by SBW

Xiaowei Bai1 said:

The GUI display "ERROR 23: MCU device init" when I used MSP-GANG430 download code into msp430f4152 by SBW, but JTAG no promblem ! 

Possibly you have too much parasitic capacitance on the JTAG cable. On 4-wire JTAG, this is no problem, but on SBW, too much capacitance will shift the signal timing too much for a reliable communication.
Especially if you have a capacitor on the RST pin, i tmight block SBW. The specs say 2.2nF max. If you have a series resistor between the capacitor and the RST pion/JTAG signal, you can use a larger capacitance (better for a stable startup on switching power supplies)