Crash Inventor after multiple use command from AddIn

[pezidek]

We have an addIn that creates a TextBox on top of the FlatPattern in the sketch. The video shows its functionality. We used AddIn without any problems in Inventor 2024. After installing Inventor 2025, AddIn causes Inventor to crash after using the TextBox insert command multiple times. The number of command repetitions leading to an Inventor crash is completely random. The behavior is independent of the open file. We attempted to upgrade AddIn from .netFramework 4.8 to . NET 8.0, but the behavior did not change. Debugging the addIn didn't tell us anything either. Does anyone have any idea what could be causing the described behavior.

[JelteDeJong]

We are also experiencing random crashes on an addon. (See this post). However, in our case, the problems started after migrating to Windows 11. We have some suspicions that the specific version 24h2 is a problem. 

Which Windows version are you using?

[pezidek]

Thank you for the reply, we also use Windows version 24H2. However, our problem started with the upgrade of Inventor to version 2025. We were already using Windows version 24H2 before the Inventor upgrade and our addIn worked without any problems.

[jelte.de.jong]

I have no solution but I find it strange to hear from 3 companies having random crashes when running addins. I was hoping to find something in common that could be the problem. 

Did you check the dmpuserinfo.xml for any information?

[mtokm]

Hi All ,

We have inventor 2023.5.2 installed

We experienced also a higher number of crashes since were upgraded to win11 24H2. On the 23 version we had a stable system. the dmpuserinfo gives us mostly an error on the API method AssemblyDocument.Save.

We will test anyway the 2025 version and see which impact the framework "could" have .