G'day Dan,
 
I've just installed version 0.1.9b6 on WinXP here.
 
First set of tests.
 
Connect to IC-92AD Band A and download memory contents.
 
Even though CHIRP was displaying 00 - 25 as the initial range, it downloaded in excess of 800 memories (I'm guessing the 800 + 45 special mems), however it did not display all of the memories between 00 and 25 as I would have expected.  It displayed 0 - 9 and then 16 - 21, followed by 34 - 37.  Everything else was missing, however when I looked at the debug log it had read 845 memories.
 
I then looked at the contents of Mem 10 (on the radio) and it matched Mem 16 in CHIRP, likewise Mem 11 on the radio matched Mem 17 in CHIRP, etc.  I checked Mem 22 (on the radio) as the next break in the memory map and it matched Mem 34 on CHIRP.
 
I then instructed the CHIRP to read mems 00 - 800 and Mem 100 (on the radio) matched Mem 258 on CHIRP.  By the time I got to Mem 799 on the radio I had 1920 memories according to CHIRP.  If only it were true, as I could really use the additional memories :)
 
I repeated this exercise twice, after exiting / restarting, with the same results.
 
One other thing I noticed was that even though CHIRP downloaded the entire contents of Band A, without prompting when it was initially connected, if I instructed CHIRP to display 00 - 800, it would download the entire contents again.
 
I'll send the debug log to you directly, but from the few that I checked the memories match up correctly in the log.
 
Regards,
 
David Tilson, VK3UR