Mod incompat; prim's upside down mod

[2026-03-06-6.log](https://github.com/user-attachments/files/25801464/2026-03-06-6.log)

[crash-2026-03-06_12.45.24-client.txt](https://github.com/user-attachments/files/25801473/crash-2026-03-06_12.45.24-client.txt)


fully repeatable with changed + connector + prim's upside down mod