AllSync & AllDup

New to AllDup but find it works well. After performing a search on a folder the file previewer works as it should. All good. But went back the next day to use the program again and now the file previews are not showing. Perhaps I clicked off an option by mistake but I cannot find a way to restore the previewer. Suggestions please. Bill

Thanks you for the quick response. I had tried toggling the options of that icon but neglected to follow up with a click on the icon itself. My mistake. Great program.