Drawings need to be recovered when opened in AutoCAD 2009
In AutoCAD 2009, when you tried to open a drawing that was opened in previous versions of AutoCAD, you were prompted to recover the drawing.
The error you received may be similar to the message below.
Unable to open this drawing. It contains incorrect or corrupted information.
The RECOVER command may be able to restore undamaged material from this drawing.
This error occurs when the drawing includes defined materials or AEC objects and it was saved to a pre-AutoCAD 2007 file format, such as AutoCAD 2004.
Either of the following solutions will allow you to open the drawings in AutoCAD 2009 without being prompted to recover them:
- Using AutoCAD 2008 or DWG TrueView, save the files in AutoCAD 2007 format.
- Using AutoCAD 2008, open the drawing, set 3DCONVERSIONMODE to 0, and then save in the AutoCAD 2004/2000 file format.