Solidworks Explorer context menu missing in Opus

I design in Solidworks. When RMB in windows explorer I get an extremely useful menu that Solidworks Explorer uses for renaming,replacing,moving etc files. (See attached image)
None of my windows RMB context menus are shown in or blocked by Opus ?? Why is this and how can I make them appear?

Does it appear if you hold Shift before and while right clicking the file?

If that solved it then turning off Preferences / Miscellaneous / Windows Integration / Hide Windows items on file context menus (shift overrides) will most likely make it appear without Shift.