I'm using MBS Chart Director, and the plug-in is not loading in R3 (yes, I copied into plug-ins directory)
Wow. You're both right, Xojo was quarantined.
The following command returned this:
This fixed it.
>xattr -d com.apple.quarantine xojo.app
As for installation: I simply opened the r3 DMG and dragged to Applications.
This concerns 10.14.6 Mojave (EDIT: I installed the security update 2019-002 released today - prior to the r3 update).
@Norman P Finally copied to the desktop and they still ended up quarantined
Drag & Drop? Copy paste? I vaguely remember some issue here where macOS would quarantine in some cases depending how you moved the files. It also may be the destination folder that matters. Super frustrating, eh?