Severe Error - Node Names conflict with User-Defined Component (using 2 Plant connections in AirTerminal:SingleDuct:UserDefined)

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Having 1 Plant Loop Connection (along with corresponding branches, EMS actuators, etc.) in a AirTerminal:SingleDuct:UserDefined object works. However, adding a second Plant Connection causes the following Fatal error:

* Severe * Same component name and type has differing Node Names.
* ~~~ * Component: AirTerminal:SingleDuct:UserDefined, name=S01_Z01_ZTE
* ~~~ * Nodes, inlet: ATU_S01_Z01 HEATING COIL HW INLET, outlet: ATU_S01_Z01 HEATING COIL HW OUTLET
* ~~~ * & Nodes, inlet: ATU_S01_Z01 COOLING COIL CHW INLET, outlet: ATU_S01_Z01 COOLING COIL CHW OUTLET
* ~~~ * Node Types: Plant Nodes & Plant Nodes

It is as if the error-handling function only expects one set of Plant Nodes, and the second set confuses it.

The corresponding IDF object is shown below (I have also included component sizing actuators in an EMS module per the EMS guide).

I also had similar issues with ZoneHVAC:ForcedAir:UserDefined.

!-   ===========  ALL OBJECTS IN CLASS: AIRTERMINAL:SINGLEDUCT:USERDEFINED ===========

AirTerminal:SingleDuct:UserDefined,
 S01_Z01_ZTE,             !- Name
 GeneralManagers,         !- Overall Model Simulation Program Calling Manager Name
 GeneralManagers,         !- Model Setup and Sizing Program Calling Manager Name
 NOD_S01_Z01_znsplitter_znterminal,  !- Primary Air Inlet Node Name
 NOD_S01_Z01_znterminal_znsupply,  !- Primary Air Outlet Node Name
 ,                        !- Secondary Air Inlet Node Name
 ,                        !- Secondary Air Outlet Node Name
 2,                       !- Number of Plant Loop Connections
 ATU_S01_Z01 Heating Coil HW Inlet,  !- Plant Connection 1 Inlet Node Name
 ATU_S01_Z01 Heating Coil HW Outlet,  !- Plant Connection 1 Outlet Node Name
 ATU_S01_Z01 Cooling Coil CHW Inlet,  !- Plant Connection 2 Inlet Node Name
 ATU_S01_Z01 Cooling Coil CHW Outlet;  !- Plant Connection 2 Outlet Node Name