[BUG] Python 3.14 incompatibility

[Vaintti]

Contact Details

No response

Description

The add-on does not support Python 3.14. Is there breaking changes in python or could this be solved with just a version up in configs or something like that?

Addon Version

latest

Blender Version

5.0.1

What platform are you running on?

Linux

[raindropsfromsky]

I get this error during installation, and the installation fails:

bl_ext.user_default.CAD_Sketcher is incompatible (This Python version (3.13) isn't compatible with (3.11))

Reporting for-

BforArtists 5.0.1 (based on Blender 5.2 Alpha)
Windows 11
CAD sketcher 27.6

[Abyvx]

i also have the same issue,
cannot load the addon

error :
bl_ext.user_default.CAD_Sketcher is incompatible (This Python version (3.14) isn't compatible with (3.11)

version : latest (0.27.6)
platform : linux , blender 5.0.1

[NAM1025]

Having the same issue
bl_ext.user_default.CAD_Sketcher is incompatible (This Python version (3.14) isn't compatible with (3.11)

Blender 5.0.1
Arch Linux
CAD Sketcher 0.27.6

[rmunn]

This will happen if your Linux distribution has modified the Blender package to use the system version of Python (which on newer systems such as Arch is 3.14) instead of the Python version that comes embedded in official Blender releases (which is currently 3.11). Python 3.14 made some backwards-incompatible changes that CAD_Sketcher has not yet been updated for. CAD_Sketcher will work with versions 3.11, 3.12, or 3.13 of Python. Two ways to fix this:

1. Download an official Blender release from blender.org and it will use the embedded Python version to run add-ons. Benefit: simple, no configuration needed. Drawback: you're not using the package from your distribution anymore so it won't auto-update when you run pacman -Syu or apt upgrade.

2. More complicated: Install a Python 3.13 package (e.g. python313 in Arch, but note it's from the AUR), then set up a virtual Python environment (with a command such as virtualenv -p 3.13 path/to/where/you/want/the/venv). Then before running Blender, run source path/to/where/you/want/the/venv/activate which will set up environment variables so that you're running Python 3.13 with any programs you launch from that terminal. Then run Blender. Benefit: you're still using the official version of Blender. Drawback: too complicated to be worth it unless you're already familiar with Python and are used to setting up virtualenvs.

In short, if you're experiencing this issue I recommend downloading an official release of Blender, rather than using the one from your distribution, for now. As of right now, Blender 5.1 is in release candidate mode and will be released in a week or less, so go ahead and grab a copy of 5.1 (and then grab another copy next week) since it's probably got most of the bugs ironed out at this point. But if anything doesn't work, then download Blender 5.0 instead.