Can't install Stable Diffusion - Neo on Linux.

[Deejay85]

Package

Stable Diffusion - Neo

When did the issue occur?

Installing the Package

What GPU / hardware type are you using?

RTX 4090

What happened?

Every time I try to install Stable Diffusion Neo I keep getting the same error message.

I am running Ubuntu 24.04.4 LTS.

Console output

Unpacking resources
Unpacking resources
Download Complete
Python 3.13.12 (main, Feb 3 2026, 22:52:12) [Clang 21.1.4 ]
Version: neo 2.28
(using an older version of PyTorch due to Nunchaku dependency...)
Installing PyTorch
Using Python 3.13.12 environment at: venv
Resolved 32 packages in 329ms
Installed 32 packages in 94ms

• cuda-bindings==13.0.3
• cuda-pathfinder==1.2.2
• cuda-toolkit==13.0.2
• filelock==3.29.0
• fsspec==2026.4.0
• jinja2==3.1.6
• markupsafe==3.0.3
• mpmath==1.3.0
• networkx==3.6.1
• numpy==2.4.4
• nvidia-cublas==13.1.0.3
• nvidia-cuda-cupti==13.0.85
• nvidia-cuda-nvrtc==13.0.88
• nvidia-cuda-runtime==13.0.96
• nvidia-cudnn-cu13==9.19.0.56
• nvidia-cufft==12.0.0.61
• nvidia-cufile==1.15.1.6
• nvidia-curand==10.4.0.35
• nvidia-cusolver==12.0.4.66
• nvidia-cusparse==12.6.3.3
• nvidia-cusparselt-cu13==0.8.0
• nvidia-nccl-cu13==2.28.9
• nvidia-nvjitlink==13.0.88
• nvidia-nvshmem-cu13==3.4.5
• nvidia-nvtx==13.0.85
• pillow==12.2.0
• setuptools==78.1.0
• sympy==1.14.0
• torch==2.11.0+cu130
• torchvision==0.26.0+cu130
• triton==3.6.0
• typing-extensions==4.15.0
  Installing packaging
  Installing sageattention
  Failed to install sageattention; Please manually install it
  Installing flash_attn
  Failed to install flash_attn; Please manually install it
  Installing nunchaku
  Installing gradio
  Installing requirements
  Traceback (most recent call last):
  File "/media/ande/AI/Data/Packages/Stable Diffusion WebUI Forge - Neo/launch.py", line 57, in
  main()

File "/media/ande/AI/Data/Packages/Stable Diffusion WebUI Forge - Neo/launch.py", line 44, in main
prepare_environment()
~~~~~~~~~~~~~~~~~~~^^
File "/media/ande/AI/Data/Packages/Stable Diffusion WebUI Forge - Neo/modules/launch_utils.py", line 410, in prepare_environment
run_pip(f'install -r "{requirements_file}"', "requirements")
~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/media/ande/AI/Data/Packages/Stable Diffusion WebUI Forge - Neo/modules/launch_utils.py", line 129, in run_pip
return run(f'"{python}" -m pip {command} --prefer-binary{index_url_line}', desc=f"Installing {desc}", errdesc=f"Couldn't install {desc}", live=live)
File "/media/ande/AI/Data/Packages/Stable Diffusion WebUI Forge - Neo/modules/launch_utils.py", line 84, in run
raise RuntimeError("\n".join(error_bits))
RuntimeError: Couldn't install requirements.
Command: "/media/ande/AI/Data/Packages/Stable Diffusion WebUI Forge - Neo/venv/bin/python3" -m pip install -r "requirements.txt" --prefer-binary
Error code: 2
stderr: Using Python 3.13.12 environment at: venv
Resolved 105 packages in 10ms
Uninstalled 11 packages in 48ms
error: Failed to install: filterpy-1.4.5-py3-none-any.whl (filterpy==1.4.5)
Caused by: failed to read directory /media/ande/AI/Data/Assets/uv/cache/sdists-v9/pypi/filterpy/1.4.5/pxbkxJHRIHv11WxXofVvy/filterpy-1.4.5-py3-none-any: Not a directory (os error 20)

Could not install forge-neo (System.InvalidOperationException: Install script failed with exit code 1
at StabilityMatrix.Core.Models.Packages.ForgeClassic.InstallPackage(String installLocation, InstalledPackage installedPackage, InstallPackageOptions options, IProgress1 progress, Action1 onConsoleOutput, CancellationToken cancellationToken)
at StabilityMatrix.Core.Models.Packages.ForgeClassic.InstallPackage(String installLocation, InstalledPackage installedPackage, InstallPackageOptions options, IProgress1 progress, Action1 onConsoleOutput, CancellationToken cancellationToken)
at StabilityMatrix.Core.Models.PackageModification.InstallPackageStep.ExecuteAsync(IProgress1 progress, CancellationToken cancellationToken) at StabilityMatrix.Core.Models.PackageModification.PackageModificationRunner.ExecuteSteps(IEnumerable1 steps))

Version

2.16.2

What Operating System are you using?

Linux