https://bugs.kde.org/show_bug.cgi?id=397903
--- Comment #2 from william.m...@anderson.ucla.edu --- (In reply to Burkhard Lueck from comment #1) > does "kcmshell5 filetypes" work for you? That helped! The command failed but with a suggestion to install kde-cli-tools, which I did. Now the button has started working, and I can also access the file associations through that command. But even after selecting "Show file in embedded viewer" and "Apply", Konqueror launches a separate viewer for PDFs, whether I use Okular or Document Viewer. Image files seem to open in the embedded viewer just fine. I'm guessing I just need to install something more, but don't know what. -- You are receiving this mail because: You are watching all bug changes.