I was trying to open and save the .dxf file from the archive attached using Aspose.CAD for .net v. 20.4.0 with the code you show at: https://docs.aspose.com/display/cadnet/DXF+Drawings#DXFDrawings-SupportforSavingDXFFiles
When I open the resulting file in AutoCAD 2021 I get the following error:
The following error was encountered while reading
in MTEXT starting at line 2210:
Missing DXF group code: 90
Invalid or incomplete DXF input – drawing discarded.
mine0.zip (20.8 KB)