Cannot use this frame connection as Obj2 to SetRelatedObject. See To Do List messages in the Troubleshooting Guide for more information. (Structure)
Meaning: The software improperly used an unsupported connection where an unexpected frame connection was provided as the second input. This is an internal software failure.
Recovery: It is likely that your catalog administrator customized the frame connections provided by Intergraph and a custom code failure occurred. You should not override the delivered frame connections because they are difficult to write and debug. The original Intergraph delivered frame connections should be used instead.