Catalina breaks everything

[NylonDiamond]

I can't seem to get any custom Quicklook previews to work in mac os catalina.

[shawncrigger]

That's because in macOS catalina they added a Quarantine, Run the following commands in terminal,

xattr -r ~/Library/QuickLook

A list of all the QL plugins that have been quarantined will show on the screen, then Run the following to remove the quarantine.

xattr -d -r com.apple.quarantine ~/Library/QuickLook

And just to verify they have all been removed, run the first command again.

xattr -r ~/Library/QuickLook