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CAD tip CAD tip # 2869:

Question

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A
or: Drawing file not valid, not a valid file

You are probably trying to open an AutoCAD 2009/2008/2007 drawing in AutoCAD 2006, an AutoCAD 2011 drawing in AutoCAD 2004, or an AutoCAD 2004 DWG file in AutoCAD 2000/2000i/2002 (generally: a newer DWG format in an older AutoCAD version). Or your DWG file is corrupted.

In the source AutoCAD version, re-save your file into a compatible (older) DWG file format (using the SAVEAS command or OPTIONS > Open&Save > Save As), or upgrade to the current version of your Autodesk product (e.g. 2015).

You can also use the offical DWG-version-converter (free) - "Autodesk DWG TrueView 2015" (see DL Download).

ACAD2010ACAD2008ACAD2004ACAD2000ACLT
100% *CAD
27.2.2003    92508×   FAQ  
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See also:
Tip 14650:3D rotation of a DWG object to the target point.
Tip 14630:Extended ASCPOINT - import coordinates from CSV file, including blocks with attributes, GPS coordinates, etc.
Tip 14628:What 3D formats are supported in Autodesk FlexSim?
Tip 14532:Two options for inserting images into DWG in AutoCAD Web app.
Tip 14472:Overview of CAD formats supported in Inventor 2026 (import/export/AnyCAD).
Selected tip: How to sum up lenghts of all lines in AutoCAD LT drawings?


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How to open DWG files easily using their thumbnail previews? « | » What export formats are supported by Inventor?


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