Settings/Preferences Question

When I click Settings/Preferences in DO9, it defaults to File Operations/Copying Files with a (-) sign next to File Operations dialog. When I click on (-) , File Operations won't close to the (+). All other options in Settings/Preferences close as they should. Is this a bug or have I got something set wrong here?

Thanks.

The tree in prefs must always have one section open - if you open another section and select something in it you'll fine the File Operations one closes fine.

You're right. That explains it. Thanks.