3D Tower Model

Hi, I am trying to generate a model with SOFiPLUS (-X) and get an error or several errors:

I’ve already simplified the system to one structural line with a standard cross section, but it just does not export.

Any ideas?
tower.dwg (41.5 KB) tower.sofistik (19.5 KB)

You have to switch your system from 2D to 3D.
Please go to the Systeminformationtab next to the export button and select a 3D System.

Best Regards,
Your SOFiSTiK Support Team

Thank you very much!