DXF read error on line 122. Invalid or incomplete DXF input

[darzonline2016]

Please help.
Autocad returns error as " DXF read error on line 122. Invalid or incomplete DXF input - - drawing discarded."
Any suggestion how to fix this? dxf file is attached.

TEST_TOWER.zip

Thanks.

[brettfo]

I can't find anything obviously incorrect with the file you provided, but AutoCAD is notoriously picky with what it will accept. I was able to open your drawing in AutoCAD 2016 by doing the following:

DxfFile dxfFile = ...; // however you're opening/creating the drawing
dxfFile.Header.Version = DxfAcadVersion.R14; // AutoCAD seems more tolerant of R14 files
dxfFile.Normalize(); // AutoCAD is very pick about the relationships between objects, and this sets those
dxfFile.Save("path/to/TEST_TOWER.dxf");