Recompute Error when opening file created with v0.21.2 in v1.0.0RC2 (Curves: Gordon fails to recompute)

[EarlJay1]

On recomputing the model when opening the 1.0RC for the first time, it fails reporting errors regarding the Gordon surface.
The AddOns were updated.
Don't know if this goes into here, but the file opens fine in 0.21.2

2:22:56 pyException: Traceback (most recent call last):
File "/home/earl/.local/share/FreeCAD/Mod/Curves/./freecad/Curves/gordonFP.py", line 144, in execute
s = gordon_surf.surface()
^^^^^^^^^^^^^^^^^^^^^
File "/home/earl/.local/share/FreeCAD/Mod/Curves/./freecad/Curves/gordon.py", line 358, in surface
self.perform()
File "/home/earl/.local/share/FreeCAD/Mod/Curves/./freecad/Curves/gordon.py", line 326, in perform
self.gordon_surf = builder.surface_gordon()
^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/earl/.local/share/FreeCAD/Mod/Curves/./freecad/Curves/gordon.py", line 109, in surface_gordon
self.perform()
File "/home/earl/.local/share/FreeCAD/Mod/Curves/./freecad/Curves/gordon.py", line 105, in perform
self.create_gordon_surface()
File "/home/earl/.local/share/FreeCAD/Mod/Curves/./freecad/Curves/gordon.py", line 230, in create_gordon_surface
surfaces_vector = bsa.createCommonKnotsVectorSurface(surfaces_vector_unmod, self.par_tol)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/earl/.local/share/FreeCAD/Mod/Curves/./freecad/Curves/BSplineAlgorithms.py", line 363, in createCommonKnotsVectorSurface
self.makeGeometryCompatibleImpl(adapterSplines, tol)
File "/home/earl/.local/share/FreeCAD/Mod/Curves/./freecad/Curves/BSplineAlgorithms.py", line 336, in makeGeometryCompatibleImpl
spline.insertKnot(resultKnots[knotIdx], resultMults[knotIdx], par_tolerance)
File "/home/earl/.local/share/FreeCAD/Mod/Curves/./freecad/Curves/BSplineAlgorithms.py", line 104, in insertKnot
raise RuntimeError
<class 'RuntimeError'>:

Full version info

OS: Ubuntu 22.04.5 LTS (ubuntu:GNOME/ubuntu)
Word size of FreeCAD: 64-bit
Version: 1.0.0RC2.38806 (Git) AppImage
Build type: Release
Branch: (HEAD detached at 1.0rc2)
Hash: 3d63fc6c2f665a8d5e6468845a419bcac80756c7
Python 3.11.9, Qt 5.15.13, Coin 4.0.3, Vtk 9.2.6, OCC 7.7.2
Locale: German/Germany (de_DE)
Stylesheet/Theme/QtStyle: unset/unset/Qt default
Installed mods:

• Curves 0.6.48
• fasteners 0.5.29

[EarlJay1]

I played around a bit more with 1.0Rc2 and found that there are numerous and frequent crashes working with Gordon surfaces, not only in this case.

[VinceBa]

Need a file to investigate....