Inserting Custom Structure Creates Block of 3D Solid With No Name

[LukeDHJDZ]

When I insert a custom structure for a pipe network everything works as expected, except when I run an audit their is an invalid block name "" found for each structure. An additional block is also created whenever I edit a structure as well. Opening these blocks in block editor shows that they are 3D solids of a pipe network structure. I am at a loss to why these blocks are created or why they do not have a name. Fortunately, the only negative side effect I have noticed so far is a cluttered block list with a bunch of audit blocks of pipe network structures. Any help determining the cause of this or how to fix it would be much appreciated. I am using AutoCAD C3D 2019 on Windows 10.

[Nilesh_Chaudhari]

Hi @LukeDHJDZ ,

Are you using any custom template to create a new drawing? Can you try importing the custom structure in the Civil 3D template?