Appdomain Issue while loading the plugin in Revit2025 developed using .NET 8.0

[mayank.desaiXQQJ9]

Has anybody encountered this issue while loading Revit addin in Revit2025. I am using PrismApplication and DryIoc which seem to have good compatibility with .NET Core. I use the latest versions of Prism libraries. No compilation errors.
The only error is when the addin is loaded in Revit at startup.
Thanks in advance.

[ricaun]

Good compatibility with .NET Core does not mean that gonna work fine inside Revit 😐

Looks like this PrismApplication is trying to create a new Window Application and that's is not allowed, because Revit already have one.

[mayank.desaiXQQJ9]

Thanks for the reply Ricaun. That was an upgrade job from

Revit 2022 to 2025. The plugin worked well in R22 but it malfunctioned after the upgrade to .Net 8.0. However the issue has been fixed.

upon a bit more research, I found out that the Prism application has different implementation for .Net 8.0.

thanks again.