I followed the instructions in the new blog post about configuring popups, here:
http://blogs.esri.com/Support/blogs/arcgisonline/archive/2011/03/16/configuring-layer-pop-ups.aspx
I added a layer to the map here:
http://www.arcgis.com/home/webmap/viewer.html?webmap=f66a2f0b6fe54f1a95cde55c957aa11c
There is no sublayer that I can open in the TOC to configure popups. What does this mean?
Thanks.