After latest updating to latest changes, error about "BOPfeatures" shows up and entire addon ceases functionality

[topcode-the-coder]

I create a new file, open optics workbench, and get the following error:

02:57:04 cannot import name 'BOPFeatures' from 'BOPTools' (E:\Program Files\FreeCAD\Mod\Part\BOPTools_init_.py)
02:57:04 Traceback (most recent call last):
File "", line 31, in Initialize
File "E:\Program Files\FreeCAD\bin\Lib\site-packages\shiboken2\files.dir\shibokensupport_feature_.py", line 142, in _import
return original_import(name, *args, **kwargs)
File "C:\Users\pc\AppData\Roaming\FreeCAD\Mod\OpticsWorkbench.\examples\example_hierarchy3D.py", line 6, in
from BOPTools import BOPFeatures

This is probably a result of something I did at some point, but I have no idea what.

[wohltat]

I see the same error under linux:

22:36:06  Traceback (most recent call last):
  File "<string>", line 31, in Initialize
  File "/tmp/.mount_FreeCAHA0TD4/usr/lib/python3.11/site-packages/shiboken2/files.dir/shibokensupport/feature.py", line 139, in _import
    return original_import(name, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/.local/share/FreeCAD/Mod/OpticsWorkbench/./examples/example_hierarchy3D.py", line 6, in <module>
    from BOPTools import BOPFeatures

22:36:06  cannot import name 'BOPFeatures' from 'BOPTools' (/tmp/.mount_FreeCAHA0TD4/usr/Mod/Part/BOPTools/__init__.py)

---

[code]
OS: Manjaro Linux (GNOME/gnome-xorg)
Word size of FreeCAD: 64-bit
Version: 2024.1006.0.14555 (Git shallow) AppImage
Build type: Release
Branch: (HEAD detached at 20241003stable)
Hash: a9810d509a6f112b5ac03d4d4831b67e6bffd5b7
Python 3.11.9, Qt 5.15.13, Coin 4.0.1, Vtk 9.2.6, OCC 7.7.2
Locale: English/United States (en_US)
Installed mods:

• Launcher
• OpticsWorkbench 1.2.2
• ShortCuts
  [/code]

[wohltat]

Here is a fix that worked for me. Update the beginning of ExampleHierarchy3D,
In my case ~/.local/share/FreeCAD/Mod/OpticsWorkbench/examples:

from FreeCAD import Vector, Rotation
import Sketcher
import Part
import FreeCAD as App
import FreeCADGui as Gui
import OpticsWorkbench
import os
from PySide.QtCore import QT_TRANSLATE_NOOP

_icondir_ = os.path.join(os.path.dirname(__file__), '..')
_exname_ = QT_TRANSLATE_NOOP('ExampleHierarchy3D', 'Example - Hierarchy 3D')

def makeLens(doc, name):
    sphere = doc.addObject('Part::Sphere', name + '_sphere')
    box = doc.addObject('Part::Box', name + '_box')
    box.Placement.Base = Vector(-2, -5, -5)
    
    cut = doc.addObject('Part::Cut', name + '_cut')
    cut.Base = sphere
    cut.Tool = box
    cut.Placement.Base = Vector(0, 10, 0)
    cut.Placement.Rotation = Rotation(-42, 0, 0)
    
    lens = OpticsWorkbench.makeLens([cut])
    lens.Label = name
    return lens
...

This gets rid of BOPTools and uses Part::Cut instead.