Refresh of WEM agent in admin console fails with error "Some of the requested actions may not have been executed properly"

When attempting to refresh the agents in any way or otherwise perform actions against an agent in the Administration node of the WEM Admin Console, the following message is seen in the bottom right corner: "Some of the requested actions may not have been executed properly." The WEM Agents being...

WEM agent not launching for administrators

No settings are going into place upon login...

WEM : "No available configuration source detected, Local cache Not Found or not initialized!"

WEM Agent not registering with WEM Broker and the following WEM Agent error is present in the Agent Session Logs: "No available configuration source detected, Local cache Not Found or not initialized!"...