The following warning "The selected reference does not exist. ()" may appear when selecting a certain group of sections in the StruBIM CYPE 3D "Bar", "Describe" option:
The warning is simply indicating that there is no section series loaded for the selected group. To fix this, simply accept the warning and then define a "Section series" and a "Section" by clicking on the buttons shown on the right-hand side of the drop-down lists:
