no solver backend found / no assembly found

[ryanmeador]

I'm seemingly running into an installation issue with Assembly3 on my Mac. I've installed FreeCAD 0.21.1 from Homebrew and installed Assembly3 and its dependency via the Addon Manager. I see these lines in the report view:

13:19:19  1.391543 <asm3.main> init_gui.py(14): no solver backend found
13:19:55  (qt.qpa.fonts) Populating font family aliases took 309 ms. Replace uses of missing font family ".AppleSystemUIFont" with one that exists to avoid this cost. 
13:19:56  37.809071 <asm3.sys> solver.py(412): no assembly found

The third line is printed when I click the "Create assembly" toolbar button, and the created assembly's icon in the tree view has a 🚫 symbol on it and is dimmed out. When I try to add constraints to my assembly, it prints the same message (and again when I try to solve said constraints; the parts never move). I've tried reinstalling and deleting all my preferences files (per the Wiki).

FreeCAD about page:

OS: macOS 14.0
Word size of FreeCAD: 64-bit
Version: 0.21.1.33694 (Git)
Build type: Release
Branch: (HEAD detached at 0.21.1)
Hash: f6708547a9bb3f71a4aaade12109f511a72c207c
Python 3.10.12, Qt 5.15.8, Coin 4.0.0, Vtk 9.2.5, OCC 7.6.3
Locale: C/Default (C)
Installed mods: 
  * woodworking 0.21.30486
  * Assembly3 0.12.0

Any ideas for how I can fix this, or info I can provide that would help diagnose it? Thanks.

[bitsmakerde]

I have the same issue :-(