Hi all,
My system was working fine, but then I tried to install the new WAN 2.2-ANIMATE official workflow from the Templates (ie. the official browse templates).
I clicked to download all the missing models. Then it said various custom nodes were missing so I went into the Manager and it said to update KJNODES. I clicked to update. It said to restart.
Now, comfy UI won’t start. It says “Unable to start ComfyUI Desktop v0.4.74”. I clicked TROUBLESHOT, then it says no error, then I click “Continue” and it very very quickly displays a red “unable to continue” and restarts. Then it tries to start up and returns to “Unable to start ComfyUI Desktop v0.4.74”.
Here’s the log:
[2025-09-25 10:30:15.377] [info] Adding extra search path custom_nodes C:\Users\toby\Documents\ComfyUI\custom_nodes
[2025-09-25 10:30:15.378] [info] Adding extra search path download_model_base C:\Users\toby\Documents\ComfyUI\models
Adding extra search path custom_nodes C:\Users\toby\AppData\Local\Programs@comfyorgcomfyui-electron\resources\ComfyUI\custom_nodes
Setting output directory to: C:\Users\toby\Documents\ComfyUI\output
Setting input directory to: C:\Users\toby\Documents\ComfyUI\input
Setting user directory to: C:\Users\toby\Documents\ComfyUI\user
[2025-09-25 10:30:16.807] [error] WARNING: Ignoring invalid distribution ~%mpy (C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages)
[2025-09-25 10:30:16.808] [error] WARNING: Ignoring invalid distribution ~ (C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages)
WARNING: Ignoring invalid distribution ~-mpy (C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages)
WARNING: Ignoring invalid distribution ~0mpy (C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages)
WARNING: Ignoring invalid distribution ~1mpy (C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages)
WARNING: Ignoring invalid distribution ~=mpy (C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages)
[2025-09-25 10:30:16.810] [error] WARNING: Ignoring invalid distribution ~umpy (C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages)
WARNING: Ignoring invalid distribution ~~mpy (C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages)
[2025-09-25 10:30:17.445] [info] [START] Security scan
[DONE] Security scan
ComfyUI-Manager: installing dependencies done.
[2025-09-25 10:30:17.446] [info] ** ComfyUI startup time: 2025-09-25 10:30:17.444
** Platform: Windows
** Python version: 3.12.9 (main, Feb 12 2025, 14:52:31) [MSC v.1942 64 bit (AMD64)]
** Python executable: C:\Users\toby\Documents\ComfyUI.venv\Scripts\python.exe
** ComfyUI Path: C:\Users\toby\AppData\Local\Programs@comfyorgcomfyui-electron\resources\ComfyUI
** ComfyUI Base Folder Path: C:\Users\toby\AppData\Local\Programs@comfyorgcomfyui-electron\resources\ComfyUI
** User directory: C:\Users\toby\Documents\ComfyUI\user
** ComfyUI-Manager config path: C:\Users\toby\Documents\ComfyUI\user\default\ComfyUI-Manager\config.ini
[2025-09-25 10:30:17.447] [info]
** Log path: C:\Users\toby\Documents\ComfyUI\user\comfyui.log
[2025-09-25 10:30:17.841] [error] WARNING: Ignoring invalid distribution ~%mpy (C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages)
[2025-09-25 10:30:17.843] [error] WARNING: Ignoring invalid distribution ~ (C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages)
WARNING: Ignoring invalid distribution ~-mpy (C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages)
WARNING: Ignoring invalid distribution ~0mpy (C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages)
WARNING: Ignoring invalid distribution ~1mpy (C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages)
WARNING: Ignoring invalid distribution ~=mpy (C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages)
WARNING: Ignoring invalid distribution ~umpy (C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages)
[2025-09-25 10:30:17.844] [error] WARNING: Ignoring invalid distribution ~~mpy (C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages)
[2025-09-25 10:30:18.161] [info]
#######################################################################
[ComfyUI-Manager] Starting dependency installation/(de)activation for the extension
[2025-09-25 10:30:18.162] [info]
[2025-09-25 10:30:21.564] [error]
0%| | 0.00/24.7M [00:00<?, ?B/s]
[2025-09-25 10:30:21.665] [error]
4%|▍ | 950k/24.7M [00:00<00:02, 9.43MB/s]
[2025-09-25 10:30:21.765] [error]
37%|███▋ | 9.08M/24.7M [00:00<00:00, 51.4MB/s]
[2025-09-25 10:30:21.866] [error]
79%|███████▉ | 19.6M/24.7M [00:00<00:00, 75.7MB/s]
[2025-09-25 10:30:21.917] [error]
100%|██████████| 24.7M/24.7M [00:00<00:00, 70.2MB/s]
[2025-09-25 10:30:21.918] [error]
[2025-09-25 10:30:21.922] [info] [ERROR] Failed to execute management script: [‘comfyui-kjnodes’, ‘#LAZY-CNR-SWITCH-SCRIPT’, ‘https://cdn.comfy.org/kijai/comfyui-kjnodes/1.1.6/node.zip’, ‘C:\Users\toby\Documents\ComfyUI\custom_nodes\comfyui-kjnodes’, ‘C:\Users\toby\Documents\ComfyUI\custom_nodes\comfyui-kjnodes’, False, ‘C:\Users\toby\Documents\ComfyUI\custom_nodes’, ‘C:\Users\toby\Documents\ComfyUI\.venv\Scripts\python.exe’]
/ [Errno 13] Permission denied: ‘C:\Users\toby\Documents\ComfyUI\custom_nodes\comfyui-kjnodes\docs\images\2024-04-03_20_49_29-ComfyUI.png’
[2025-09-25 10:30:21.923] [error] Failed to execute startup-script: C:\Users\toby\AppData\Local\Programs@comfyorgcomfyui-electron\resources\ComfyUI\custom_nodes\ComfyUI-Manager\prestartup_script.py / [WinError 5] Access is denied: ‘C:\Users\toby\Documents\ComfyUI\user\default\ComfyUI-Manager\startup-scripts\install-scripts.txt’
[2025-09-25 10:30:21.923] [info]
Prestartup times for custom nodes:
6.5 seconds (PRESTARTUP FAILED): C:\Users\toby\AppData\Local\Programs@comfyorgcomfyui-electron\resources\ComfyUI\custom_nodes\ComfyUI-Manager
[2025-09-25 10:30:21.924] [info] WARNING: Potential Error in code: Torch already imported, torch should never be imported before this point.
[2025-09-25 10:30:21.932] [info] Checkpoint files will always be loaded safely.
[2025-09-25 10:30:21.975] [error] Traceback (most recent call last):
[2025-09-25 10:30:21.976] [error] File “C:\Users\toby\AppData\Local\Programs@comfyorgcomfyui-electron\resources\ComfyUI\main.py”, line 147, in
import execution
File “C:\Users\toby\AppData\Local\Programs@comfyorgcomfyui-electron\resources\ComfyUI\execution.py”, line 15, in
import comfy.model_management
[2025-09-25 10:30:21.976] [error]
File “C:\Users\toby\AppData\Local\Programs@comfyorgcomfyui-electron\resources\ComfyUI\comfy\model_management.py”, line 237, in
[2025-09-25 10:30:21.977] [error] total_vram = get_total_memory(get_torch_device()) / (1024 * 1024)
[2025-09-25 10:30:21.978] [error]
[2025-09-25 10:30:21.979] [error]
[2025-09-25 10:30:21.979] [error]
[2025-09-25 10:30:21.980] [error] ^^^^
[2025-09-25 10:30:21.981] [error] ^^^^^^^^^^^^^^
[2025-09-25 10:30:21.982] [error]
File “C:\Users\toby\AppData\Local\Programs@comfyorgcomfyui-electron\resources\ComfyUI\comfy\model_management.py”, line 187, in get_torch_device
[2025-09-25 10:30:21.982] [error] return torch.device(torch.cuda.current_device())
[2025-09-25 10:30:21.983] [error]
[2025-09-25 10:30:21.984] [error]
[2025-09-25 10:30:21.984] [error] ^^
[2025-09-25 10:30:21.985] [error] ^^^^^^^
[2025-09-25 10:30:21.985] [error] ^^^^^^^
[2025-09-25 10:30:21.986] [error] ^^^^^^^^^^^
[2025-09-25 10:30:21.987] [error] File “C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages\torch\cuda_init_.py”, line 1026, in current_device
[2025-09-25 10:30:21.988] [error] lazy_init()
File "C:\Users\toby\Documents\ComfyUI.venv\Lib\site-packages\torch\cuda_init.py", line 372, in _lazy_init
[2025-09-25 10:30:21.988] [error] torch._C._cuda_init()
[2025-09-25 10:30:21.989] [error] RuntimeError: config[i] == get()->name() INTERNAL ASSERT FAILED at “C:\actions-runner\_work\pytorch\pytorch\pytorch\c10\cuda\CUDAAllocatorConfig.cpp”:253, please report a bug to PyTorch. Allocator backend parsed at runtime != allocator backend parsed at load time