CLIP weights are inference tensors from ComfyUI loading. The worker
thread runs without inference_mode, so PyTorch rejects inference tensors
in multi_head_attention_forward (version counter tracking). Wrap the
encode_text_clip call in torch.inference_mode() since text encoding
doesn't need gradients.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>