I am using the info found at http://our.umbraco.org/wiki/reference/backoffice-apis/tree-api-to-create-custom-treesapplications to create a custom action to the context menu of the content tree. All I end up with is an empty root 'content' folder.

The last line in this article says to update the umbracoAppTree table, which is very vague. So all I did here was update the treeHanlderAssemblyName and treeHandlerType  to reflect those I created. Was this what that last step was getting at, or am I missing something?  

Cheers,
Andy