# Error message in custom node install process

**URL:** <https://forum.comfy.org/t/error-message-in-custom-node-install-process/1443>\
**Category:** Windows\
**Tags:** issue, node-library\
**Created:** [February 11, 2025, 5:39pm UTC](https://forum.comfy.org/t/error-message-in-custom-node-install-process/1443 "2025-02-11T17:39:44Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![unvermelih](https://yyz1.discourse-cdn.com/flex009/user_avatar/forum.comfy.org/unvermelih/32/368_2.png) [@unvermelih](https://forum.comfy.org/u/unvermelih)\
**Post date:** [February 11, 2025, 5:39pm UTC](https://forum.comfy.org/t/error-message-in-custom-node-install-process/1443/1 "2025-02-11T17:39:44Z")

</div>

Ultimate SD Upscaler is not installing:

 ![Screenshot 2025-02-11 203757](https://canada1.discourse-cdn.com/flex009/uploads/comfyui1/original/1X/8052649a6e3dd84bce25ebc11a5e8c459473d036.png)

Error message occurred while importing the ‘ComfyUI\_UltimateSDUpscale’ module.

Traceback (most recent call last):  
File “C:\Users\username\AppData\Local\Programs@comfyorgcomfyui-electron\resources\ComfyUI\nodes.py”, line 2112, in load\_custom\_node  
module\_spec.loader.exec\_module(module)  
File “”, line 999, in exec\_module  
File “”, line 488, in _call\_with\_frames\_removed  
File "C:\Users\username\Desktop\ComfyUI\custom\_nodes/comfyui\_ultimatesdupscale\_init_.py", line 32, in   
from .nodes import NODE\_CLASS\_MAPPINGS, NODE\_DISPLAY\_NAME\_MAPPINGS  
File “C:\Users\username\Desktop\ComfyUI\custom\_nodes/comfyui\_ultimatesdupscale\nodes.py”, line 6, in   
from usdu\_patch import usdu  
File “C:\Users\username\Desktop\ComfyUI\custom\_nodes\comfyui\_ultimatesdupscale\usdu\_patch.py”, line 2, in   
from repositories import ultimate\_upscale as usdu  
File “C:\Users\username\Desktop\ComfyUI\custom\_nodes\comfyui\_ultimatesdupscale\repositories\__init_\_.py”, line 14, in   
spec.loader.exec\_module(ultimate\_upscale)  
File “”, line 995, in exec\_module  
File “”, line 1132, in get\_code  
File “”, line 1190, in get\_data  
FileNotFoundError: [Errno 2] No such file or directory: ‘C:\Users\username\Desktop\ComfyUI\custom\_nodes\comfyui\_ultimatesdupscale\repositories\ultimate\_sd\_upscale\scripts\ultimate-upscale.py’  
Traceback (most recent call last):  
File “C:\Users\username\AppData\Local\Programs@comfyorgcomfyui-electron\resources\ComfyUI\nodes.py”, line 2112, in load\_custom\_node  
module\_spec.loader.exec\_module(module)  
File “”, line 999, in exec\_module  
File “”, line 488, in _call\_with\_frames\_removed  
File "C:\Users\username\Desktop\ComfyUI\custom\_nodes\comfyui\_ultimatesdupscale\_init_.py", line 32, in   
from .nodes import NODE\_CLASS\_MAPPINGS, NODE\_DISPLAY\_NAME\_MAPPINGS  
File “C:\Users\username\Desktop\ComfyUI\custom\_nodes\comfyui\_ultimatesdupscale\nodes.py”, line 6, in   
from usdu\_patch import usdu  
File “C:\Users\username\Desktop\ComfyUI\custom\_nodes\comfyui\_ultimatesdupscale\usdu\_patch.py”, line 2, in   
from repositories import ultimate\_upscale as usdu  
File “C:\Users\username\Desktop\ComfyUI\custom\_nodes\comfyui\_ultimatesdupscale\repositories\__init_\_.py”, line 14, in   
spec.loader.exec\_module(ultimate\_upscale)  
File “”, line 995, in exec\_module  
File “”, line 1132, in get\_code  
File “”, line 1190, in get\_data  
FileNotFoundError: [Errno 2] No such file or directory: ‘C:\Users\username\Desktop\ComfyUI\custom\_nodes\comfyui\_ultimatesdupscale\repositories\ultimate\_sd\_upscale\scripts\ultimate-upscale.py’

---

<div class="post-metadata">

**Author:** ![rhuang](https://yyz1.discourse-cdn.com/flex009/user_avatar/forum.comfy.org/rhuang/32/21_2.png) [@rhuang](https://forum.comfy.org/u/rhuang)\
**Post date:** [February 20, 2025, 7:44pm UTC](https://forum.comfy.org/t/error-message-in-custom-node-install-process/1443/2 "2025-02-20T19:44:58Z")

</div>

Try installing the nightly version of this custom node.