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WorkItemId - 26d61b66378742f29fdf127cbb421972

Last week, I was testing to see if I can upgrade my app to support inventor 2026. But it didn't work. In order to see if it was some issue on the app bundle side, I started changing the app bundle and the activity. I have tried couple of solutions posted around this topic in the Stackoverflow but I couldn't get it to work. Finally, I even deleted the app bundle, its versions and re-added the app. However, it still doesn't work and always run into the same error.

[05/19/2025 09:00:45] InventorCoreConsole.exe Information: 0 : ...
[05/19/2025 09:00:45] InventorCoreConsole.exe Information: 0 : Opened
[05/19/2025 09:00:45] CoreConsole Dispose start
[05/19/2025 09:00:45] CoreConsole ReleaseAll start
[05/19/2025 09:00:45] CoreConsole ReleaseAll end
[05/19/2025 09:00:45] CoreConsole Dispose end
[05/19/2025 09:00:45] There is an error in XML document (15, 9).
[05/19/2025 09:00:45] CoreConsole exiting (-1)
[05/19/2025 09:00:46] End Inventor Core Engine standard output dump.
[05/19/2025 09:00:46] Error: Application InventorCoreConsole.exe exits with code -1 which indicates an error.
[05/19/2025 09:00:46] End script phase.
[05/19/2025 09:00:46] Error: An unexpected error happened during phase CoreEngineExecution of job.
[05/19/2025 09:00:46] Error: Retrying on InternalServerError. Request is 'POST' 'https://threadmodeler.com/callback/onprogress'
[05/19/2025 09:00:46] Job finished with result FailedExecution
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  • So you upgraded the add-in to .NET 8 and I assume it worked locally on the desktop? Commented May 19 at 12:06
  • I didn't upgraded to .net 8. The last version 2025 was still working with .net framework version. So, it is still targeting net 4.7. Commented May 19 at 12:45
  • Yes, in the case of 2025 there were two options, 2026 is .NET 8 only: aps.autodesk.com/blog/… Commented May 19 at 12:46
  • Understood. But now I broke the appbundle that it doesn't work for 2025 version also. I deleted the old one and now added new one and it still doesn't work. Is there any way to know why it isn't working. The log from the status report as you can see in the post, tells it crashes and fails. however, it is hard to tell whether the addin was loaded or if it failed. Commented May 19 at 12:51
  • You can use the 2025 .NET 8 engine. Does your add-in work with Inventor 2026 on the desktop? Commented May 19 at 14:01

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