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CAD tip # 2869:

Question CAD
% platform category

Error message: File was created by an incompatible version of AutoCAD.

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 www.cadstudio.cz/download).

ACAD2010ACAD2008ACAD2004ACAD2000LT

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27.2.2003 82239× FAQ

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applies to: AutoCAD 2010 · AutoCAD 2008 · AutoCAD 2004 · AutoCAD 2000 · AutoCAD LT ·

See also:
Tip 12881:	How to attach multiple raster images to my DWG in one go?
Tip 12592:	How to automatically purge old backup files .BAK?
Tip 12392:	Export unfolds of sheetmetal parts to DXF - parameters for iLogic and VBA
Tip 12347:	Invalid or incomplete DXF input -- drawing discarded.
Tip 12325:	How to display a DWG from Advance Steel including AS objects? (AST viewer)

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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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