I made a drawing on AutoCad. I was finally able to get the model into Midas and Soilworks.

The problem happens when I start meshing. I am able to mesh 1D elements, but not 2D. I keep getting an error saying "Meshing Generation failed. Please check the Seed Data".

Does anyone know what I am doing wrong? I am convinced that something I am doing in AutoCad is stopping Soilworks to properly compute the data, as 1D elements are able to mesh, but not 2D.