[BUG] Step file not opening correctly on newer versions of RT branch

Is there an existing issue for this?

[X] I have searched the existing issues

Version

0.21 (Development)

Full version info

[code]
OS: Windows 11 build 22631
Word size of FreeCAD: 64-bit
Version: 2024.322.0.14555 (Git shallow)
Build type: Release
Branch: (HEAD detached at 20240322stable)
Hash: da98001cfe5cc50cb2e9e4c241626d07dd4b06f5
Python 3.11.8, Qt 5.15.6, Coin 4.0.1, Vtk 9.2.5, OCC 7.7.1
Locale: English/United States (en_US)
Installed mods: 
  * A2plus 0.4.61
  * btl 0.9.9
  * CfdOF 1.24.8
  * CurvedShapes 1.0.5
  * Defeaturing 1.2.1
  * dodo 1.0.0
  * fasteners 0.4.71
  * FeedsAndSpeeds 0.5.0
  * freecad.gears 1.0.0
  * lattice2 1.0.0
  * Manipulator 1.5.0
  * Plot 2022.4.17
  * sheetmetal 0.3.12
  * Silk 0.1.5
[/code]

Subproject(s) affected?

None

Problem description

A step file that works fine with at least 20240123 (and ondsel) version doesn't open on newer RT ones. File: BK12 Unit.zip

Error:

19:31:19 1.826119 init_gui.py(14): no solver backend found 19:34:05 Traceback (most recent call last): File "", line 1, in <class 'OSError'>: Access violation

Anything else?

I "cleared" the roaming -folder so it does this with a "clean" run..

Code of Conduct

[X] I agree to follow this project's Code of Conduct

realthunder / FreeCAD

[BUG] Step file not opening correctly on newer versions of RT branch #984