If you are using any of these XMS silicon:
XMS430FR6989 Rev B and older
XMS430FR5969 Rev E and older
The latest MSP430 Emulators v6.0.1.2 no longer support the above mentioned silicon revisions. Please obtain the latest silicon revision before updating the MSP430 Emulators via CCSv6 updater.
As another solution, to continue using XMS silicon revisions, please maintain 2 copies of CCS.