i got the following error when i tryied to update a contact detail on my yahoo messenger 9.
“The last addressbook operation did not succeeded due to a server error Error Code: –40031”
To edit you can do the following steps
1. Close yahoo messenger
2. Go to C:\Program Files\Yahoo!\Messenger\cache Clear the contents (Change the drive letter if u installed in a different drive)
3. Clear the contents of that folder
4. Start messenger again
Check the changes if it is not done try again,. If that also failed means
a. Go to yahoo mail account
b. Edit the contact using the address book section
c. check with messenger, if it is not showing the changes done do the steps one to four (1-4)