I have found several responses to this same question (apparently there is no problem. I will be sending these drawings again today.
Comments:
Phoenix, AZ: July 13, 2015
Open Design Alliance (ODA) today announced the release of version 4.1 of Teigha, its software development platform for engineering applications.
Teigha 4.1 introduces support for graphics cache files that optimize regeneration speed for complex drawings. Using this new technology, a Teigha-based application can reduce initial render time by up to 80% when opening a cache-enabled drawing. Also included are performance improvements for Teigha Cloud, ODA’s framework for building custom web-based solutions.
“The focus of ODA development is continual improvement, directed by the needs of our members,” commented Neil Peterson, ODA President. “Towards that end version 4.1 also provides support for new features in version 2016 .dwg files, improvements to PDF export and enhanced support for mobile platforms.”
In addition, Teigha version 4.1 contains fixes for issues reported by ODA members. It is available for download by ODA members at
www.opendesign.com
Posted: Tue Nov 17, 2015 10:10 pm Post subject: Re: saving archicad 19 to 2014 dwg?
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I was just at Graphisoft today and accidentally this topic came up.
As I was informed, Autodesk did NOT change the file format in AutoCAD 2016. In the last decade or so they always changed the file format in every third version but not this time.
So AutoCAD 2016 is apparently using the same AutoCAD 2013 file version, which means that ARCHICAD 19 should have no problem opening AutoCAD 2016 DWG/DXF files.
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Laszlo Nagy, Moderator, Site Admin
https://twitter.com/laszlonagy
As a workaround I have AutoDESK Trueview installed (free DWG viewer). This can save back DWG to older version.
It's also Posted: Tue Nov 17, 2015 10:10 pm Post subject: Re: saving archicad 19 to 2014 dwg? Reply with quote
I was just at Graphisoft today and accidentally this topic came up.
As I was informed, Autodesk did NOT change the file format in AutoCAD 2016. In the last decade or so they always changed the file format in every third version but not this time.
Posted: Tue Nov 17, 2015 10:10 pm Post subject: Re: saving archicad 19 to 2014 dwg? Reply with quote