KJ Nodes Dead in the Water

[Metairieman55]

I am a ComfyUI Portable user for years now on the following system since Dec 2025:
:: HARDWARE INFO ::

System RAM: 63 GB
GPU Model: NVIDIA GeForce RTX 5090
Video VRAM: 32 GB

:: SOFTWARE & VERSIONS ::

ComfyUI : v0.29.0

Windows long path support is Enabled

Python : 3.12
PyTorch : 2.10
CUDA Core : 13.0

NVIDIA-drv: 610.47

The issue I've been confronting is specifically with ALL LTX2.3 workflows using the KJ Nodes for the VAE Loader especially. Manager install, CMD install, update, version change, etc., nothing seems to "find" those components and even the ComfyUI Templates won't work no less others' workflows. I regularly update CUI and the nodes, also. I can run Wan2.2 workflows without a hitch all day but can't get LTX2.3 to cooperate.

Any ideas? Could it be a Python version clash or something similar?