Project Folders Problem in Explorer

Not sure what I’ve accidentally done here?
I’ve lost the ability in Explorer that when I right click on a Project to remove the Project Folder, I get a box where:
Hide ‘Folders’ is greyed out
(tick) Open Editors is visible to select
(tick) Folders is greyed out
(tick) Outline is visible to select
(tick) Timeline is visible to select

Any help really appreciated.

Solved! Did a complete re-install