"Call unknown function" after restarting Editor with a Custom Blueprint Node (from C++)

I added a custom Blueprint Node with C++. It worked fine, but after I did close the Editor and started it again, it doesn’t work anymore.
I can makle it new and then the new one works again, until I close the Editor again.

Run your project from your IDE (load up your project and compile). The class should then become available inside the editor.

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Thank you (again :sweat_smile:). Even through Visual Studio did throw some complaints, it works now. Even after restarting the Editor.