I previously enabled the display of the Computer, Home, Trash, and Network Servers icons on the desktop on Ubuntu 12.04, probably using MyUnity. Today, I installed a custom icon set and after rebooting, all four icons disappear from the desktop. I switched back to the default icon set, all of this using MyUnity, and rebooted. The icons are still missing.
I can get the icons to reappear by opening dconf Editor and disabling the display of icons on the desktop and re-enabling the display of icons. I can also get them to show up by killing nautilus and restarting it. They again disappear after reboot, regardless of the icon set selected.
I've tried deleting all of the Nautilus, Unity, and Compiz configuration folders and running the --reset options as appropriate for each from the command line.
I'm running out of ideas to fix this issue. Any thoughts?