Can't move files

I Have a dual pane open and am trying to cut and paste files from one location to another. This doesnt work anymore since I upgraded from v 10 to 12.
I am using win 10

What happens when it goes wrong? Is there an error message?

Do other methods work? (Drag & drop, or the Move button on the toolbar.)

Are you using the default toolbars and menus for Opus 12?