Cant get it to work

Straight from the plugin description:

Note:
For some users the installation procedure left WP-dTree without a default configuration. If after installing and activating the widget all you get is a wierd string of code, just go to Settings -> WP-dTree and hit “Update settings”.

Thanks for your quick reply. I did however try this several times with different settings, but nothing happens. I’ve left the plugin activated for you to check out at https://www.fatdux.com/blog/. The long string of code is no longer there, now all there is, is the headline: categories.

Thanks!

You’re not including the javascript in your page. Make sure your theme calls wp_head() and wp_footer(). If it already does, disable W3 Total Cache.