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CAD tip CAD tip # 2869:

Question CAD 
 %  platform  category 
Q - question

Error message: File was created by an incompatible version of AutoCAD.
A - answer 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
100% *  CAD 
27.2.2003    73981×   FAQ  
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applies to: AutoCAD 2010 · AutoCAD 2008 · AutoCAD 2004 · AutoCAD 2000 · AutoCAD LT ·

See also:
Tip 11830:How to influence linetype scale or color for hidden edges in documentation views?
Tip 11542:How to reset the top browser node name back to the file name?
Tip 11469:Why you should not use the DEFPOINTS layer to draw geometry?
Tip 11398:Editing block attributes in AutoCAD mobile.
Tip 11337:Convert 3D PDF files back to CAD models.
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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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