It’s worked in the past, where I import a Scapple board and then edit it within Scrivener (“Open in External Editor”). However, a new Scapple just looks like the screenshot:
Worse, old Scapple boards previously imported into Scrivener also look like that.
Sounds suspiciously related to How does QuickLook create Thumbnails and Previews? With an update to Mints – The Eclectic Light Company
Sequoia is the first version of macOS that can’t use third-party qlgenerators. I have noticed some document types that only a few weeks ago in Sonoma still used custom thumbnails and full previews, but now can’t do so, although others continue to work normally.
If Scapple isn’t listed as a (QuickLook) app extension, as described in the article, and Scrivener relies on that preview… 
I was mistaken in thinking the document wasn’t accessible; based on what you said, it’s only a preview, and so I tried to open it in the external editor. That works!
And Scapple is not listed as a QuickLook extension 
At least I can still edit the board. Thank you!
Great. 
Scapple isn’t the only program late to the party, just got some Affinity updates this week adding such extensions. The list isn’t very populated at the moment.
Mine lists only two: Apple Tips and MarkEdit
Looks like this change caught many devs off guard. Let’s hope the extension is (relatively) easy to implement. Only Keith can tell.
@paulcoholic Almost forgot, good news:
Fixes made to Quick Look and icon previews for compatibility with macOS 15.
Hello team -
I’m using Scapple and Scrivener on Mac OS Sequoia. If I import a Scapple document into Scrivener, I can’t see the actual document inside the Scrivener pane. This is functionality that was previously provided by the Quicklook Plugin. It looks like Sequoia has deprecated that functionality and now requires a new implementation using a new API. Are there plans to leverage that new API?
Sorry if this is a duplicate. I searched the forums and found similar issues, but they were all dated prior to the release of Sequoia, so the problem appears to be different.
Other thread on this updated today!
But what you need to know is here:
Awesome! Thank you!!
