Hello, I just upgraded to a new Macbook, and unfortunately, I have lost progress in many projects as Ableton won´t read the plug-in 
And apparently, no proper solution has been given. Does anyone know how to make it work?
I have all the components in the respective folders, and Ableton only reads the AU component…
Have you done a manual rescan for ableton? I thought this was solved but I could be mistaken sorry 
By “manual rescan” you mean selecting a custom folder? Yes, I have tried absolutely everything, and nothing makes the VST3 component appear on Ableton
Dang 
Tried reinstall too ya?
Yes, I tried installing an older version, and it did not work. Then I installed that and installed the newest once again, and still no VST3 component visible in Ableton (even though I can see the component file in the correct VST3 folder in my computer) 
You coukd also try re-install ing ableton most recent update?
Sounds just unlucky though
When the VST3 isn’t for some reason in the wrong location, this strongly sounds like a signing problem related to macOS.
To see the VST3 in Live, try to follow the command line steps that comes in the nfo files for many cracked plugins or search for “how to sign plugins on macos via the terminal”. Basically you just need to copy some lines into the terminal and then drag the vst3 from its plugin folder to the terminal.
This isn’t a rare issue. Also had to do this with some paid plugins like Soothe 2 and a lot of free vsts.
Try these steps, but instead typing in the path manually, you just have only to past the command in front the first “/” that indicates the beginning path, include the space in the end of the command line. Now drag the VST from your directory into the terminal. If done correctly it should look like the filepath of the examples but with the file path name in the end instead of the star. Make sure the space in front of the first “/” isn’t deleted and hit enter.
Open Ableton and the if the VST3 appears.
sudo xattr-cr /Library/Audio/Plug-Ins/VST3/*
sudo xattr-r -d com.apple.quarantine /Library/Audio/Plug-Ins/VST3/*
sudo codesign --force --deep --sign - /Library/Audio/ Plug-Ins/VST3/*
Heya
Thanks for the info - based on the instructions, it sounds like macOS doesn’t see the plug ins as safe/secure and is blocking them?
Is that the issue? Similar to this Reddit thread, it’s plugins with code sign certificate issues? As I think this is a known Catalina issue iirc
It isn’t an exclusive Catalina thing, Apple stepped up the security over the years. Those steps apply to modern macOS versions as well.
Something that isn’t signed doesn’t mean it isn’t safe, only that something in the way of distribution didn’t worked ike Apple intended.
In my experience, signing was always the problem when some plugin wasn’t recognized by Live but as well for some software that didn’t start.
Yea I gotcha, Catalina is just the first OS is started in I think - didn’t think it was still around as an issue
But great to know to help out some mac users