Blender 4.2 is in an Beta state, and this also applies to the Cats Plugin. We will not accept any issues on Blender 4.2 until the first full release of Cats is out.

Cats Blender Plugin (0.19.0) A tool designed to shorten steps needed to import and optimize models into VRChat. Compatible models are: MMD, XNALara, Mixamo, Source Engine, Unreal Engine, DAZ/Poser, ...

Reallusion updates its free Blender Auto Setup plugin, improving rigging, shader setup, and character import workflows for Character Creator 4 and iClone.