The Network Assistant Startup extension needs to be moved to the System Folder thus causing it to load after PC Setup. Once the extension load order is reversed everything will work properly.
Workaround:
1. Move Network Assistant Startup from the Extensions Folder to the base level of the System Folder.
2. Reboot workstations.
PC Setup and Network Assistant extensions will load in reverse order on the init parade. PC Setup and Network Assistant will function properly in this configuration.