
"We’re writing to let you know that in our qualification of Apple’s new Sierra OS (v 10.12) we have discovered serious problems with many Plugin Alliance products that primarily affect customers who use the Audio Unit format. Our developers are working hard on a solution but at this time we are recommending that all Mac based Plugin Alliance customers do not upgrade to Sierra. We will continue our qualification efforts and expect to announce full support in the near future. We greatly appreciate your patience while we complete our qualification process." Here's what Plugin Alliance are saying about some of the incompatibility between some plugins and macOS Sierra 10.12: Keep extra copies of your important projects, settings, files in the cloud or a separate hard drive.Don't upgrade on your studio or live machine.Don't upgrade until someone else has tested the software, hardware and plugins you rely on with the new OS.Don't upgrade if you're mid-project / album.but as a general rule for computer-based musicians and producers: when a new OS comes out. We're not certain yet when fixes will be made available.

(Sigh: seems like we have similar issues every new Mac OS release.). Unfortunately, there appears to be a problem with certain audio unit plugins running in Apple's new OS. Yes, it's lovely to delve into new OS features. Yes, we know you want to experience Siri on your Mac. But, just as macOS Sierra is launching around 22nd September. By the time you read this it might (and probably will be) safe to upgrade. At least don't upgrade to the first version of macOS Sierra on your primary music making machine. ARTICLE UPDATE: Anyone who has updated to macOS Sierra 10.12 and is experiencing difficulty with UA or Plugin Alliance or any apparently unsupported AU plugins and drivers, please click here to read about a possible workaround to fix things.
