Trellis2 It's not running at all.

### Custom Node Testing

- [x] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Your question

I am trying to run the new native TRELLIS 2 / Pixal3D workflow in ComfyUI. The Sparse Structure Generation stage executes successfully, but the pipeline consistently crashes at the KSampler in the Shape Generation stage

Try Trellis 2 with int8 and fp16.
My confyui is up to date and I'm using PyTorch 2.12.1+cu130.

The error message is:

"KSampler failed
This node threw an error during execution. Check its inputs or try a different configuration."

ComfyUI Error Report
## Error Details
- **Node ID:** 18
- **Node Type:** KSampler
- **Exception Type:** ValueError
- **Exception Message:** ValueError: not enough values to unpack (expected 4, got 3)

## Stack Trace

### Logs

```powershell

```

### Other

_No response_

Reproduce the native TRELLIS 2 / Pixal3D workflow with custom nodes disabled, using both int8 and fp16. Start at node 18, the KSampler in the Shape Generation stage, and capture the complete traceback for `ValueError: not enough values to unpack (expected 4, got 3)`; done means the workflow completes without that failure.

Written by the indexing model from the issue text.