I have no clue what to do... We are making emergency plans for whenever there is a flood. For these situations we need to model the surrounding area and put our mobile pump equipment into it. However, we get the surroundings in DXF. Up to this point everything worked out fine, but now it won't extrude the imported DXF anymore. Anyone has a thought? I can only thin extrude my sketch instead of solid body's. I noticed a button underneath selected contours which says: "Generate Regions". Anyone that knows what this is for? I couldn't find anything about it on the forum or on google.