I resized the icons in the Home folder using Home/Edit/Preferences/Icon View Defaults/Default Zoom Level 66%. This worked fine but when I wanted to put them back to 100% it wont work. They are stuck at 66%. Similarly in Home/Documents I made the Default Zoom Level 150%. The changed and are now stuck at 150%. I can change into list mode and back again OK but the icons are stuck at the selected sizes. How do I recover from this?