Change Ignition Designer so when using Tag Browser Right Click EAM Send to Agents popup correctly auto populates Target Tag Provider with a valid Tag Provider as configured on the Gateway. Seems 'default' is hard coded. When default does not exists on the Agent you get an error. If it exists on the Agent and is disabled no error is returned. Manually changing the entry does not save the entry for successive Send to Agents. Default Send Target should be the project default tag provider.