James- I don't know where to point you unfortunately. I just plugged in my 92AD and it read in fine (it does take a long time because it reads all of the memories, even blank ones). I do see that it while I can edit the memories "live", I can not import a CSV or CHIRP file from another radio. I assume this is not yet supported in CHIRP on the 92AD. I am using an iCOM branded cable and a cheap Prolific USB/Serial converter.
If anyone here has an ICOM 92AD and is using Chirp with no problems can you please send me the instructions on how you do it?