Editable template structure is un-editable
I am trying to get editable templates to work, without much luck. I found this video on the AEM Comunity Channel that is doing exactly what I am trying to do - set up a simple example from a baseline created from the maven archetype. At 1:50 in the video, he drops a layout container into the structure of his page - I can't do this. I can find the component in the sidebar and drag it into the body of the template, but nothing happens. Same is true for all the other components in the sidebar - not just the layout container. I also don't see the blue positioning arrows that appear in the video, indicating that it has no intention of allowing me to drop anything. Assuming that I'm an admin on the server and I've followed all the preceding steps in this video, notably setting up a policy on the root that allows layout containers, what is determining that my structure components don't belong?
The same seems to be true if I try to manipulate the structure of the we-retail templates. I can modify the existing we-retail content template (based on empty page template type) but if I create my own template from the same template type, it cannot be modified.
This seems like it should be something simple, but I haven't figured it out yet.