[Elecraft] Mac 10.8.5 & KAT500 Utility connection via KXUSB FTDI is inop

[Buzz Dean]

KAT500 Utility on my Mac mini does not connect from the Mac to KAT500.
When I fire up the Utility, it stays in "Initializing" state until the
connection attempt times out. This is repeatable.
I'm pretty sure the FTDI driver itself is OK as I refreshed the P3
firmware using a separate KXUSB via FTDI to the same Mac via virtual
port …A400THz. No problem there.
The KXUSB via FTDI <> KXUSB for the KAT500 should be using a second
virtual port ….A900I9J as there's a separate KXUSB cable for the
KAT500, but will not connect.
The names of the virtual ports' names were determined via the System
Profile tool.
I've swapped in a third known-good KXUSB cable with the same failure
to connect. The KAT500 has successfully connected to a Window 7 PC
using both KXUSBs. Mac users, what am I missing ?
--
Buzz - W6BZZ

buzz.dean at gmail.com