Application has detected mixed version of AEC objects

[Joel_S_Hills]

Opening a file in AutoCAD 2018 and saving it down to version 13

When I open the file in AutoCAD 2017, I get this popup. I am looking to find a way to disable the popup, its interfering with scripts were running.

I can get rid of it by doing a wblock *, but that as not really a workable fix.

Any Tips?

[Anonymous]

What does the pop up says?

[Anonymous]

Oh sorry, I guess your post title is the pop up

[RobDraw]

There are many posts about this. 2018 brought with it a new .dwg format. The save as an older version is not going to make the file compatible with older versions. You need to export the drawing.

[Joel_S_Hills · Accepted solution]

Yes there has been lots of posts about this, most have to do with Civil 3D, or much older versions of AutoCAD.

I did find this in one of the previous posts, That for now fixed the popup issue

In the C:\Users\*USER*\AppData\Roaming\Autodesk\AutoCAD 20xx\R2x.x\enu\support\Profiles\FixedProfile.aws

• Add/Edit the following as a child node under the <HideableDialogs>
• <HideableDialog id="AecUiBase.PreviousVersionOpen" result="8" />

[pendean]

The 2018 user needs to -EXPORTTOAUTOCAD the file down to your version first, then you can use it without the error message in 2017.

[RobDraw]

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@Joel_S_Hillswrote:

Yes there has been lots of posts about this, most have to do with Civil 3D, or much older versions of AutoCAD.

I did find this in one of the previous posts, That for now fixed the popup issue

In the C:\Users\*USER*\AppData\Roaming\Autodesk\AutoCAD 20xx\R2x.x\enu\support\Profiles\FixedProfile.aws

• Add/Edit the following as a child node under the <HideableDialogs>
• <HideableDialog id="AecUiBase.PreviousVersionOpen" result="8" />

---

You're only stopping the notification. AutoCAD is telling you there are issues with the contents of the file. Those issues remain and could cause problems down the road. You NEED to export the files, not save as an earlier version.

[Anonymous]

Gonna post this here too:

This is now happening in my office. 150 people and 4 are on 2018. I am getting the pop up warning when copying/pasting, and I'm sure others are too or will be.  We have too many projects and files (literally thousands) with Xrefs to run the export command mentioned that will break Xrefs. Exporting hundreds of drawings per project and relinking Xrefs would take FOREVER. What can we do?

[jestiron]

Same here....

I have 6,500 LODs to complete and I have to close this dialog every time??? 

[peterjwinberg]

I ran into this during a 2018 Architecture trial last year, but we stayed (for the time being) with 2015 vanilla. I only worked on, and "down saved" (save as 2013 dwg), a handful of files from '18 Architecture, and each one showed this error message whenever I copy-and-pasted objects in '15 vanilla.

While in '15, I had to wblock the "entire drawing" of each file, and that seemed to do the trick. Fields, xref's, sheet layouts... all carried over fine. I had other users test the files before overwriting (although I'm still keeping an archive just in case). So far so good - no more error message.

[RobDraw]

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@peterjwinberg wrote:

I ran into this during a 2018 Architecture trial last year, but we stayed (for the time being) with 2015 vanilla. I only worked on, and "down saved" (save as 2013 dwg), a handful of files from '18 Architecture, and each one showed this error message whenever I copy-and-pasted objects in '15 vanilla.

While in '15, I had to wblock the "entire drawing" of each file, and that seemed to do the trick. Fields, xref's, sheet layouts... all carried over fine. I had other users test the files before overwriting (although I'm still keeping an archive just in case). So far so good - no more error message.

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That's because WBlock creates the file from scratch, a truly blank template, and you are not using any objects that utilize newer features. It will probably continue to work until you try to use one of those newer objects in one of those blocks. At that point, you will need to convert the drawing, one way or another, for it to be fully compatible with older versions. You might as well put into practice converting or exporting as has been suggested many times by many people regarding this topic.

[peterjwinberg]

My solution only works for users that would no longer operate back and forth in Architecture. It could work for @Anonymous to fix any files currently with the pop up, as long as his 4 users on '18 start to export versus save as.

When my organization makes the switch, I will be sure we migrate appropriately - Thanks!