EPUB quicklook and preview problems in macOS Catalina

[Ajk Sanders]

Anyone one else having problems?

"epub.mdimporter" cannot be opened because the developer cannot be verified. 

FTP 7b8 is not showing epub files with "FoxTrot Preview" in preview pane, only as other formats.

I've read it is a notarisation issue with Catalina and the developer of epub.mdimporter doesn't have the time to fix it.

[FoxTrot Engineering]

Ajk Sanders wrote:

> "epub.mdimporter" cannot be opened because the developer cannot be
> verified.

There are probably some other ways to fix the problem, but one option is
to clear the quarantine flag on this executable file using Terminal.app.
To do so, type this in Terminal.app:

xattr -d com.apple.quarantine epub.mdimporter

but replace "epub.mdimporter" by the actual full path to the file (you
may drag and drop it from the Finder to the Terminal.app window to
"paste" its path)


Jérôme - FoxTrot Engineering

[John Lea]

I had a similar problem and the solution from Jérôme worked for me - but first I had to get Spotlight to explicity reindex the folder(s) containing epub files.