Thanks for the reply, Barry.Its is correct that i can place new MEP objects that works, it is from the old MEP libraries. It seems all object that was placed in the project in older versions became inactive once opned in AC29. This exact example was ...

Hi, Barry!I have a similar problem as well. I can place new MEP elements, but the existing MEP elements are inactive in my model. I cannot even delete then directly. Workabound was to delete the layer and all contents. Do you have any reading materia...