The "safetensors" files are NOT safetensors files! They are potentially dangerous pytorch saves, just with the ".safetensors" extension!

[ClownsharkBatwing]

The "safetensors" files provided for UltraPixel (ultrapixel_t2i.safetensors, lora_cat.safetensors) are not actually safetensors files at all. They are pytorch saves - potentially dangerous binaries - that misleadingly are named with the ".safetensors" extension. I converted both of them to legitimate safetensors files, and submitted a PR to the HF repo:

https://huggingface.co/ClownsharkBatwing/ultrapixel_convert/blob/main/ultrapixel_t2i.safetensors
https://huggingface.co/ClownsharkBatwing/lora_cat_convert/blob/main/lora_cat.safetensors
https://huggingface.co/roubaofeipi/UltraPixel/discussions/1

Here is a link to my PR for the GitHub repo for the ComfyUI node version - it implements the ability to load these safetensor versions, in place of the pytorch saves:
2kpr/ComfyUI-UltraPixel#27