AutoCAD file format versions 2

[SWmechE]

All,

Is there any way to tell what version a dwg file is saved as without having the higher version? I'm using AutoCAD 2006 and lately when I've tried to open files from a couple different sources I get a message stating "Drawing file is not valid". Just wondering if it's time to get an upgrade and if so what version I would need to jump to.

Thanks,

Steven

 

[CarlB]

You can open a dwg file in Word or Wordpad and look at the very beginning line. File format changed in ver 2010, 2007, 2004...
- From

http://autodesk.blogs.com/between_the_lines/autocad-release-history.html

•AutoCAD DWG Version History by Release for the past 25+ years
The first six bytes of a DWG file identify its version. In a DXF file, the AutoCAD version number is specified in the header section. The DXF system variable is $ACADVER.

•AC1024 AutoCAD 2010
AC1021 AutoCAD 2007/2008/2009
AC1018 AutoCAD 2004/2005/2006
AC1015 AutoCAD 2000/2000i/2002
AC1014 Release 14
AC1012 Release 13
AC1009 Release 11/12
AC1006 Release 10
AC1004 Release 9
AC1003 Version 2.60
AC1002 Version 2.50

 

[IFRs]

Autodesk has a free file converter - go to their web site

 

[SWmechE]

Thank you for both the posts, especially so quickly. It indeed appears to be different file formats.

 

[brandoncdg]

You should definitely check out Autodesk's free converter. It's amazing and free! I don't think many people know about it.

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