Updated ComfyUI Nodes:

PixArt Fix for Modern ComfyUI

Running PixArt Sigma through ComfyUI_ExtraModels on a current ComfyUI build? You've probably hit one of these:

ModuleNotFoundError: No module named 'comfy.sd3_clip'
TypeError: ModelPatcher.__init__() got an unexpected keyword argument 'current_device'

…or a mysterious white screen where the ComfyUI interface should be. All three are the same disease: ExtraModels was written against APIs that newer ComfyUI removed.

What's in it

Three drop-in replacements for custom_nodes\ComfyUI_ExtraModels\PixArt\: the SD3-dependent splitter node removed from nodes.py (the other six PixArt nodes are untouched), and the dead current_device argument removed from loader.py and lora.py.

The T5 trick

You don't need the removed SD3 splitter at all — modern ComfyUI's core CLIPLoader has a pixart type. Point it at t5xxl_fp8_e4m3fn.safetensors (the same file Flux uses), set type to pixart, and wire it straight into your text encode nodes.