Try Get Info on one of the files and change the program used for all. I have the same issue, but haven't dug into it yet.
On Tue, May 2, 2023, 4:24 AM Mark Harris <regma...@gmail.com> wrote: > Hi, I’ve recently tried to use Lilypond on a MacBook Air M2 with Ventura. > Quick Look is a vital part of my workflow, as I work with hundreds of .ly > files, and always used to work on my old Mac with an older operating > system. Now when I try to Quick Look a .ly file, I get the message: > > “The extension com.apple.tips.TipsAppQuicklook-macOS does not implement > file previews” > > Can anyone help me solve this? > > Many thanks, > > Mark >