[Ham-Mac] Connecting Mac to 897?

[Lew Phelps K6LMP]

OK, I sprung for a CT-62 cable last week, hoping to hook my Mac up to  
the Yaesu FT-897D.  I want to be able to run Dog Park's MacLogger DX  
and MemoryManager, as well as other programs.  But I can't get the  
computer to recognize the radio.  Here's my current setup:

CT-62 cable plugged into the CAT/Lin port, and connected to  
Kensington Serial-USB converter, which is plugged into USB port.   
MacLogger "sees" the SUBSerial converter, but reports "no data" from  
the radio.

THe only menu setting I have made on the FT-897D is to set the CAT- 
Lin-Tuner menu to CAT.

I have tried every permutation and combination of baud rate and stop  
bits with MacLogger DX, all to no avail.

What am I missing?

Lew Phelps
K6LMP