Issue with RCA4 or is it me?

[paulrjohnson58]

Hi All,
I'm new to this forum so please forgive any mistakes omissions etc.
I have been using Freecad 0.21.2 stable release for a while and am now trying out the Release candidate.
I have in the stable version been able to use the A2plus WB to import a item from another previously created part and used that to cut out a profile from the part I am trying to create. This has worked fine in the stable release but in the release candidate throws an error. Is this me or is it an issue?
I have attached some screen shots from the stable release which works and the release candidate that doesn't, as well as the part file.
Any and all help greatly appreciated
Paul

OS: Windows 11 build 22631
Architecture: x86_64
Version: 1.0.0RC4.39104 (Git) Conda
Build type: Release
Branch: (HEAD detached at 1.0rc4)
Hash: 83646753e051eaf438c0d5e9351cb57bd27377ab
Python 3.11.10, Qt 5.15.15, Coin 4.0.3, Vtk 9.3.0, OCC 7.8.1
Locale: English/United Kingdom (en_GB)
Stylesheet/Theme/QtStyle: FreeCAD Dark.qss/FreeCAD Dark/Fusion
Installed mods:

• A2plus 0.4.68
• AirPlaneDesign 0.4.1
• Assembly4 0.50.15
• Beltrami 1.1.0
• CurvedShapes 1.0.12
• Curves 0.6.50
• ExplodedAssembly
• ExtremeProDark 2.9.0
• fasteners 0.5.29
• Help 1.0.3
• lattice2 1.0.0
• Manipulator 1.5.7
• Plot 2024.10.23
• QuickMeasure 2022.10.28
  Attachments
  Retract top plate.FCStd
  (20.05 KiB) Downloaded 2 times
  Screenshot 2024-11-17 140754.png
  Screenshot 2024-11-17 140754.png (332.86 KiB) Viewed 98 times
  Screenshot 2024-11-17 140730.png
  Screenshot 2024-11-17 140730.png (444.48 KiB) Viewed 98 times
  Screenshot 2024-11-17 140553.png
  Screenshot 2024-11-17 140553.png (377.21 KiB) Viewed 98 times
  Screenshot 2024-11-17 140532.png

[paulrjohnson58]

copied from https://forum.freecad.org/viewtopic.php?t=92209
I'm not sure if I have done this correctly