CONNECTOR TYPE=DCOUP3D missing properties 1

[HawksOkeyoJr]

Hi guys, I have been trying to troubleshoot this problem for more that 3 hours without any success, can somebody highlight me on whats wrong with the model (attached .inp file).
When I try to check the model before the run, I get the error that two elements 2900 and 2901 have no properties assigned on them, which is not true cause I did assign the properties while creating the connector. I will appreciate your insight, thanks in advance.

 

[Mustaine3]

These two elements are not connectors. DCOUP3D are elements for distributed couplings.
Users Manual 32.4.1 Distributing coupling elements

Remove them if you don't need them.