### Binner version master ### Operating System Windows 11 ### Describe the bug and the steps to reproduce it When adding a part with a custom part type it throws a "System.NullReferenceException". ### Would you like to attach your appsetings.json configuration? _No response_ ### Screenshots or Videos (Optional, but they help!) <img width="1164" height="466" alt="Image" src="https://github.com/user-attachments/assets/6d30496c-5ab3-4357-bdcb-32d53a53b0cb" /> <img width="2256" height="632" alt="Image" src="https://github.com/user-attachments/assets/8b7e8f54-f5da-47c7-a354-b02c8aac1f40" /> ### Are you able to contribute a PR? (No is ok!) Yes, I am also opening a PR that solves the problem along side this issue