Well finally installed the new firmware. Had problems installing from the MAC so as the file was extraced firmware file was not selectable. So went to the PC which is still on the network and was able to install the TR-12-RB_188.8.131.52 firmware file. I can get to the printers web page from both the Mac and the PC. and I can open the HP utility on the PC and can open the Color Center tab.
On the MAC still no color center. Down loaded and tried to install the HP utility for MAC the MAC_OSX_HP_Designjet_HP_Utility.dmg and I get an error when trying to install this app. which says:
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000000d0019e07
Do I have to uninstall the printer driver and start over or is there something else I need to do.