Fix it with Stella · Local AI tools
ComfyUI broke again. Stella fixes it.
Torch/CUDA mismatch, custom nodes that won't import, xformers errors after every update. Tell Stella what happened — it reads the actual error, repairs your environment, and keeps your workflows. Your setup, fixed — not replaced.
Free. No credit card, no trial. Go is $5/mo, Pro is $15/mo.
Sound familiar?
You've probably already searched this.
- comfyui broken after update
- comfyui missing custom nodes fix
- comfyui torch cuda version mismatch
- comfyui failed to import custom node
- fix comfyui without reinstalling
- a1111 xformers error fix
How it works
Tell Stella. It works your computer. Done.
- 1You describe the problem in your own words.
- 2Stella uses your apps, browser, and files.
- 3You watch every step. Destructive work waits.
Try this prompt
“ComfyUI won't start since I updated it — the console says 'Failed to import custom node' and something about torch and CUDA versions.”
You: ComfyUI won't start since I updated it — the console says 'Failed to import custom node' and something about torch and CUDA versions. Stella: The log is a torch/CUDA mismatch plus one custom node that won't import. I'll install a matching set and pin that node. You: Don't touch my workflows. Stella: Workflows and models stay put. ComfyUI is launching clean now — I quarantined the abandoned node instead of faking a fix.
On this problem
What Stella actually does.
- Reads the startup log and the real error, not a forum guess
- Checks your torch / CUDA / xformers versions and installs a matching set
- Reinstalls or pins the custom nodes that failed to import
- Relaunches ComfyUI to confirm it loads — workflows and models untouched
Ready when you are
Stop reinstalling ComfyUI.
Download Stella for Mac or Windows and tell it what's broken.
Free. No credit card, no trial.