I have MC v16. I have never gotten the ringtone creator to work. It always just says "There was a problem creating the ringtone. The operation was cancelled." I feel cheated cuz this function seems like such a useful and fun feature.
*** UPDATE***
Here is what i did to solve my problem after Matt that that MC was
using the shared desktop folder rather than the user desktop.
go to c:\user\public
open Folder options.view and under Hidden files and folders,
check Show hidden file, folders, and drives
[this will allow you to see the Public Desktop folder which was hidden]
Apply the changes and exit folder options.
in explorer, open c:\users\public\... you will now see the Public Desktop
go to Public Desktop and right-click for properties
change to the "Security" tab and you will see all users authorized to make
changes to the Public Desktop.
Find your ID and press "Edit".. Add "Full Control for your ID"
Apply the changes and exit
You can go back to the Public folder and rehide the desktop folder for safety sake.
I did the above and MC ringtone function worked like a charm!