[ComfyUI 0.28.0] ImportError: cannot import name 'interleaved_freqs_cis'

[zhangshanshan92802-beep]

Describe the bug
I'm using ComfyUI 0.28.0, and this node fails to load with the following error:

ImportError: cannot import name 'interleaved_freqs_cis' from 'comfy.ldm.lightricks.model'

Steps to reproduce

1. Update ComfyUI to 0.28.0.
2. Update ComfyUI-LTXVideo to the latest version.
3. Restart ComfyUI.

Expected behavior
The node should load without errors, as it did with ComfyUI 0.27.x.

Environment

• ComfyUI version: 0.28.0
• ComfyUI-LTXVideo version: [nightly]
• OS: Windows 10

Additional context
The function interleaved_freqs_cis appears to have been removed from comfy.ldm.lightricks.model in the latest ComfyUI update. Many users will encounter this issue. Please update the node to be compatible with ComfyUI 0.28.0.

Thank you!

[zhangshanshan92802-beep]

ComfyUI-LTXVideo version: latest (nightly, as of 2026-07-27)

[goodluckjgb]

The same Error!
[WARNING] Traceback (most recent call last):
File "H:\ComfyUI\nodes.py", line 2247, in load_custom_node
module_spec.loader.exec_module(module)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^
File "", line 1026, in exec_module
File "", line 488, in call_with_frames_removed
File "H:\ComfyUI\custom_nodes\ComfyUI-LTXVideo_init.py", line 14, in
from .gemma_encoder import LTXVGemmaCLIPModelLoader, LTXVGemmaEnhancePrompt
File "H:\ComfyUI\custom_nodes\ComfyUI-LTXVideo\gemma_encoder.py", line 23, in
from .text_embeddings_connectors import load_text_embeddings_pipeline
File "H:\ComfyUI\custom_nodes\ComfyUI-LTXVideo\text_embeddings_connectors.py", line 18, in
from .embeddings_connector import (
...<3 lines>...
)
File "H:\ComfyUI\custom_nodes\ComfyUI-LTXVideo\embeddings_connector.py", line 7, in
from comfy.ldm.lightricks.model import (
...<7 lines>...
)
ImportError: cannot import name 'interleaved_freqs_cis' from 'comfy.ldm.lightricks.model' (H:\ComfyUI\comfy\ldm\lightricks\model.py)

[WARNING] Cannot import H:\ComfyUI\custom_nodes\ComfyUI-LTXVideo module for custom nodes: cannot import name 'interleaved_freqs_cis' from 'comfy.ldm.lightricks.model' (H:\ComfyUI\comfy\ldm\lightricks\model.py)

[CoachBate]

same here

[cinemazverev]

for portable versions try to downgrade kornia to elder version in your ComfyUI_windows_portable\python_embeded
cmd:
python.exe -m pip install kornia==0.6.12

[GlamoramaAttack]

Update with git pull for this custom-node and everything is fine again.