Thank you @Gijs for the tip! However… I’m sorry to say that it didn’t make a difference here.
Philip
@Philip did you restart?
one other thing maybe to try:
https://discussions.apple.com/thread/250636039
@dan hmm, upon further inspection, after I removed that file, things still work as they should, so I guess it was a false relationship after all
I’m not surprised. It was worth a shot though and not a bad suggestion. I suspect all you needed, in the past, was to “kick” QuickLook at least once. That process should already be running by the time macOS loads the user-supplied launch agents.
I have no clue what is happening on @Philip’s two Macs. I suppose he could verify that the process is even running at all…which I suspect it is, as he says other thumbnails are updating.
If you want to verify that the process is running you can run this from Terminal:
$ ps -xww | grep quicklook*
which should return something like this:
638 ?? 0:00.26 /System/Library/Frameworks/QuickLookThumbnailing.framework/Support/com.apple.quicklook.ThumbnailsAgent
2322 ttys000 0:00.00 grep quicklook
not too familiar with Terminal I must confess, but here it gives this back:
zsh: command not found: $
zsh: no matches found: quicklook*
also looking in the Frameworks directory I don’t see a QuickLookThumbnailing.framework directory
Omit the $. Try:
ps -xww | grep quicklook*
$ is the default bash command prompt.
But honestly, if you’re not having trouble, I think you’ll see it running. In fact, I think @Philip will too.
strange, : I got the same result: zsh: no matches found: quicklook*
I have no clue why not. In fact, I’m not even sure this isn’t a red-herring.
Yes, of course 
Thanks! I’ll try this later.
Philip
