Double-click or 'select download' does nothing when in Search window

[amitaba]

Running latest version for Windows10 x64 - v4.1.1 and now for about 90% of titles when I select a title in Search Pane, and either double-click or select download, nothing happens. I am basically now unable to download hardly anything with this version. The items show hundreds to thousands of Seeders, so should be available for download