App can't be opened because Apple can't check it

I’m trying to run Sooper Looper and I get this message: “SooperLooper” can’t be opened because Apple cannot check it for malicious software.

I know how to bypass this when it’s stand alone but not when it’s a plugin. I know there’s a way.

  1. Reach out to the developer and tell them to sign their plugin!

  2. Workaround (assuming you know for sure that the plugin is legitimate), then unquarantine it using a terminal window, e.g.

sudo xattr -r -d path/to/your/plugin

but I do not recommend this and all bets are off if you have a problem.
(meaning don’t blame anybody here!!!)

For more info or questions, please do a search for the topic on the Apple forums.

First things first. What is your version of Gig Performer?
What happens when you download an older version of Sooper Looper?
Did you use the AU version? “A MacOS Audio Unit version is included which does not require JACK to run.”

Thank you dhj and npudar! It’s an open source program and one of the most popular loopers. I used it years ago on various macs, but I think it was always stand alone. I will see about contacting them. I’m using GP 4.8.2. I will try an older version. Yes I am using the AU version for the very reason that I don’t need Jack. (no pun intended) Thanks again for your quick response!