I previously made an avatar using the new VRC Constraints in the first beta. After upgrading to the latest version, I recieved these error messages regarding assigning group indices for many of the constraints in my scene (attached below.)

The constraints still worked as intended in the editor; however, after pressing Play or building to VRChat, the constraints stopped working, and the console began spamming NullReferenceExceptions (also attached below). The constraints failed to work ingame either.

The NullReferenceException errors persist even after closing the scene with the avatar and opening a new, entirely empty scene; it reverts back to the beginning error (with still-functional constraints) after restarting the editor.

I uploaded a private avatar having this issue with the following ID:

avtr_deb548cd-de08-4578-8c57-7493a9fd19c1