If I understand Luke Scott correctly, I'm getting the same problem.
I've sucessfully installed City Navigator v9 maps in that they load OK when I boot up the 2610 and cam be read OK.
I've got the latest version of Mapsource installed v.6.12.2
I've got the latest software update on my 2610 v4.80
Here's the problem :
Select Find
Select Addresses
Brings up a box which says "Find Address" and three options below it :
Limit to
Number
Street
If I select Limit to, it brings up a sub box of :
<No Limit>
Enter a City
Enter a Postal Code
All OK so far, HOWEVER :
If I select either Enter a City or Enter a Postal Code, I USED to get the QWERTY keyboard (A-Z) or 0-9 for House Number but the QWERTY keyboard remains dimmed and you can't select any letters ....... other than the OK button which then brings up a blank list of cities!
If I select anything else other than Address it seems OK including activating the QWERTY keyboard if I want to use the Filters.
What d'ya reckon?