Thanks for the minidump. I see there are mixed files from different FP/RC versions.
Please, do this:
- Close Max
- Check if these files are in the Max root folder, and delete them: RCEdit.dll, RailCloneVRay50.dll, ForestQt.dll, ForestQtCatalog.dll, ForestVRay50.dll.
- Same for Qt5Core_Itoo.dll, Qt5Gui_Itoo.dll, Qt5Network_Itoo.dll, Qt5Solutions_MFCMigrationFramework-Itoo, Qt5Svg_Itoo.dll, Qt5Widgets_Itoo.dll, Qt5Xml_Itoo.dll and the Qt5Itoo folder.
- Reinstall RC and FP.
- Check if those files were copied again (it should not).
FP and RC installation now is done in C:\ProgramData\Autodesk\ApplicationPlugins. It must not be any file in the Max root or "plugin" folder.