# Built from source results in garbage output

**URL:** <https://forum.comfy.org/t/built-from-source-results-in-garbage-output/4014>\
**Category:** Mac\
**Tags:** issue, install\
**Created:** [December 8, 2025, 2:49am UTC](https://forum.comfy.org/t/built-from-source-results-in-garbage-output/4014 "2025-12-08T02:49:58Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ayyyyybeeeee](https://avatars.discourse-cdn.com/v4/letter/a/ecc23a/32.png) [@ayyyyybeeeee](https://forum.comfy.org/u/ayyyyybeeeee)\
**Post date:** [December 8, 2025, 2:49am UTC](https://forum.comfy.org/t/built-from-source-results-in-garbage-output/4014/1 "2025-12-08T02:49:58Z")

</div>

Hello!

Newby here.

I’ve built PyTorch v2.9.1 (torch, torchvision, torchaudio) and Python 3.13.9 from source and testing ComfyUI v0.3.76, but I’m getting total garbage as the result from templates.

I previously used these templates from sources mostly pre-built and that worked OK, so I assume something is wrong with one of the components I’ve built which is leading to this error. It’s pretty difficult to mix and match, so my question is - can anyone help me identify which of the components is likely the one at fault here?

There are NO ERRORS or warnings listed from the console where ComfyUI is running.

My hardware is Intel MacOS USE\_MPS=1, USE\_CUDA=0, USE\_MKL=0, USE\_MKLDNN=0

 ![Qwen_t2i_00001_](https://canada1.discourse-cdn.com/flex009/uploads/comfyui1/original/1X/d4876047eb068310e8ddccfe56f3b62f03bd3947.jpeg)

Thanks for any suggestions!