![](/s/cache/8a/07/8a0749b00589fb1b701b8a08dc6e56ba.png)
Crash when exporting FBX on MacOS
I notice several threads with the same issue but they are a couple of years old, so I decide to report a new one
Mac OS Monterey, Unity 2019.4 LTS, uMotion v1.29
Answer
![](https://cdn.userecho.com/characters/80.png?1)
Hi,
thank you very much for your support request.
The problem of the old threads should be fixed (I switched to a different FBX SDK build at this time which fixed the issues).
- Are you running an Intel based Mac or an ARM based Mac?
- Does this crash happen every time or randomly?
- How can I reproduce this crash?
Thank you very much.
Best regards,
Peter
![](/s/cache/8a/07/8a0749b00589fb1b701b8a08dc6e56ba.png)
1- Intel based
2- Every time
3- I just created a Generic project, import the .anim file and tried to export the fbx by replacing the original model
As soon as I hit export, Unity crashes.
Tried the same process using Windows and didn't have any issues.
Hopefully this helps you figure it out a fix, we're using uMotion quite often in our workflow and I recently change from Windows to Mac.
![](https://cdn.userecho.com/characters/80.png?1)
Thanks for the addition information. I'm able to reproduce this issue and am currently investigating. I'm keeping this thread updated on my progress.
Best regards,
Peter
![](https://cdn.userecho.com/characters/80.png?1)
I finished my investigations: This problem seems to be related to how Unity 2019.4 executes native dlls on Mac OSX. It's either a bug in the Unity 2019.4 editor or a known/intended compatibility issue, anyway this crash does not happen on newer versions of Unity (2020 and above).
Due to Unity 2019.4 not being maintained by Unity anymore, I recommend updating to a more recent LTS version of Unity.
Because of that, in future versions of UMotion, I'm going to disable the FBX Export feature for Unity versions <= 2019.4 on OSX.
I'm sorry for the inconvenience and thanks again for reporting this problem.
Best regards,
Peter
Customer support service by UserEcho