

When you do a rescan of Reapers VST paths the blocked VSTs are listed in Privacy & Security but clicking “Allow anyway” does nothing. VSTs that come with installers normally work, but those that are just VSTs don’t. The problem is, a VST is runnable code but it’s not an application. Another way of doing the same thing is trying to launch an unsigned application, and when it fails go into System Preferences > Privacy & Security where the application is listed and you can “Allow anyway”. This presents you with a new button named “open” that will permanently allow the application to run. Just like in previous versions of MacOS you can make Gatekeeper allow downloaded applications by right-clicking them and then holding down shift and clicking open. Gatekeeper is what keeps MacOS users from inadvertently launching unsigned apps downloaded from the internet. The problem is that Gatekeeper has become more aggressive and now also blocks VSTs. Trying to install a few of my favorite VSTs to use in Reaper on a freshly installed Catalina I got this: I thought that was referring to the ended support of 32-bit applications – which is true (and has no workarounds) – but it turns out that wasn’t the only issue in Catalina. You’ve heard the rumours: don’t update your Mac to Catalina (or later) or your music applications won’t work.
