Opening books with viewer on Catalina after viewer is already open

Bug #1855515 reported by aphemos on 2019-12-07
This bug affects 1 person
Affects Status Importance Assigned to Milestone

Bug Description


Starting with macOS Catalina, when I open an EPUB from the Finder, the viewer does not load the book if it is already open. If the viewer isn't open, selecting a book from the Finder works fine.

Kovid Goyal (kovid) wrote :

This is a bug in macOS, you should report it to apple. If you open and then try to run the second viewer instance vi finder you will get an error -13052 saying that launch services failed to run the viewer. This is almost certainly related to the fact the the viewer/editor are sub bundles inside the main calibre application bundle. Nothing I can do to fix this. Either apple needs to fix it or at least provide an error message that tells us why launching failed.

See for instance

as another instance of this.

Changed in calibre:
status: New → Invalid
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