I'm experiencing the same kind of problem.
- macOS 10.13
- 3.5.1 [883]
I've quit Alfred and deleted
~/Library/Application Support/Alfred 3/Databases/clipboard.alfdb
Problem still occurs as soon as I invoke first Alfred and then the Clipboard Viewer. Alfred crashes shortly after the Clipboard Viewer appears in the list of results.
Please let me know if my crashlog helps
Thanks,
Stefan