Upgrade model fail

[giel_lambrechts]

Yesterday I worked on a model saved it closed my pc. Today it asks me wanne upgrade model? I click on Upgrade the model but I get the following error.

I tried backup files from a day ago and it also says it. other model work fine only this one gives me an error.
whats can I do?
This is what i see after the error

[eizinmyat]

Hello,

Could you try coping the file to a local drive or at a different place with your file location before and open the revit file again?

[giel_lambrechts]

I tried this already. I also tried opening it on an other computer. Its just this file including backup files from 1 -2 hours before.

[RSomppi]

Does that file path exist on your D drive?

[DarrenP]

try going through this: https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Your-model-needs-t...

[giel_lambrechts · Accepted solution]

I found a Back-up from on my google drive from a week before. This one is working so I'm just gonna start over again from there. I probably didn't close it right. I was working with dynamo so it probably went wrong there. 

[hmunsell]

Just curious, in the first upgrade message it says upgrading from 2009 to 2024. Was the file actually in 2009?  i ask because I had a similar message when upgrading some models. I thought it was weird so I asked the engineer and they claimed the original was in 2020 format. I tried to upgrade the model a second time, this time picking Detach from Central & Audit, and didn't get the message again. 

I only saw it that one time and didn't screen capture it for proof LOL.

[RSomppi]

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@hmunsell wrote:

Just curious, in the first upgrade message it says upgrading from 2009 to 2024. Was the file actually in 2009?  i ask because I had a similar message when upgrading some models.

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This was a fairly common issue years ago. IIRC, it was due to families with old and/or imported content/data that wouldn't upgrade properly. The message about the 2009 content being upgraded was thought to be actually a default when the actual version could not be determined. I think families created from very old family templates was another possibility.

[hmunsell]

@RSomppi I've only seen that happen a couple time's over the years. I was wondering if it was something like that, Revit can't read the file for some reason and just defaults to 2009 as a default.... 

[ToanDN]

Always keep a copy of the original model when you upgrade.  This cannot be said enough.

[giel_lambrechts]

I use Revit 2024 so it should be that version.

[giel_lambrechts]

I was not trying to upgrade my model, I used it the day before and it asked me to upgrade my version because I saved it wrong probably. luckly for me I saved it on a google drive and that version is not corrupt

[RSomppi]

You're welcome.