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 Download).

ACAD2010ACAD2008ACAD2004ACAD2000LT

* CAD

27.2.2003 89999× FAQ

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AutoCAD LT

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

See also:
Tip 14323:	AutoCAD does not start, saved DWGs are sometimes corrupted, fatal error during export or copy, or missing NLS file.
Tip 14310:	Easy graphical display of the project or assembly file structure (hidden function).
Tip 14304:	How to generate a report of used blocks including their visibility status in AutoCAD LT?
Tip 14300:	How to convert my DWG drawing to a hand-drawn, sketched appearance even in AutoCAD LT?
Tip 14250:	How to select all lines of the same length or boundary polylines of the same area?

Selected tip: Feature codes for Network License Manager.

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