Issue: The current ComfyUI-LTXVideo node (latest commit) fails to load on ComfyUI v0.6.0 due to deprecated imports. The node attempts to import apply_rotary_emb from comfy.ldm.lightricks.model. This file path is no longer valid or accessible in the new ComfyUI core structure, causing a persistent ImportError and preventing the node from initializing.

The Fix: I restored functionality by manually editing custom_nodes/ComfyUI-LTXVideo/tricks/modules/ltx_model.py to redirect imports to the standard diffusers library and explicitly define missing base classes.

File: tricks/modules/ltx_model.py

Change: I replaced the failing local import block (approx. lines 6-10) with the following explicit imports:

Replaced 'from comfy.ldm.lightricks.model import ...' (line 6) with:

from diffusers.models.embeddings import apply_rotary_emb
from diffusers.models.transformers.transformer_2d import BasicTransformerBlock
from comfy.ldm.lightricks.model import LTXVModel

Environment Tested:

• ComfyUI Core: v0.6.0
• Frontend: v1.36.9
• OS: Linux (Pop!_OS)

Hope this helps!!