I'm building an extension which loops through all folders but when I want to access the Thunderbird function "GetFolderTree" I always get a "GetFolderTree is not defined" error. I've looked at others extensions to find out why but mine (derived form the helloworld sample) looks quite similar. The complete source is at <a href="http://wyoguide.sf.net/test/FolderSelect.zip">http://wyoguide.sf.net/test/FolderSelect.zip</a>. Does anybody have an idea what's wrong?
Is there another way to loop throu all folders and get their names? How can I set a selected folder so it's selected in the folder pane?