I hope I'm posting this in the right place:
I'm using the Basic Viewer (http://www.arcgis.com/apps/Viewer/index.html) with data I have loaded into AGOL, but when I switch the sharinghost value in default.js to my Portal address the viewer loses the widget(s) on the right-hand side that contain the legend, layers, etc (data display fine on the map) - you can see the browser scroll bar moving as you flip through the tools, but nothing is displayed over the map canvas. When it's switched back to www.arcgis.com it works as expected, but I need it to work with the Portal, too. I'm working with secured layers and trying to get the proxy software installed on the web server, but I know that that relates to the display issue with the tools in the viewer.
Any thoughts or experience are appreciated, or let me know if I've left out any critical information.