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ProSelect on OSX 11 (Big Sur)

Updated Mar 31, 2021

As of March 2021, over 300 people are now running ProSelect on Big Sur. Of these, around 45 people have Macs using the new Apple Silicon (M1) processors (see next section). 

Versions of ProSelect that will run on OSX 10.15 (Catalina) - namely ProSelect 2019r2 and newer - will run in Big Sur. As with the release of Catalina, if we come across any issues that need to be addressed in a new ProSelect release, they will incorporated into either a ProSelect 2020r1 update or the forthcoming 2021r1 release.

We have no reported issue with machines running Big Sur on Intel Macs. See the section below for more about M1 processor-based machines and any reported issues.

If you upgrade your computer to Big Sur and/or are using M1 hardware and do come across any issues with ProSelect, please let us know by submitting a support ticket.  

Upgraded to Big Sur from OSX 10.14 (Mojave) or earlier?

IMPORTANT: Make sure that you have given ProSelect the permissions that it needs to work correctly as detailed in this article: ProSelect on Mac OSX 10.15 Catalina & newer.

New Apple Silicon (M1 processor) Macs

The new range of Mac computers (announced by Apple in November 12, 2020) use the new M1 processors and require software applications to be updated and re-compiled to run at full speed on these machines.

In the meantime, Apple uses emulation software called Rosetta to dynamically convert the Intel-based software so that it can run on these new machines. Based on tests by others, when the native version is released, it should run about 30% faster than the current version does under Rossetta.

ProSelect on M1 machines

The development environment and software libraries that we use for building ProSelect are currently being updated to run these machines. When these are ready, we will be able to release a version of ProSelect that will run natively on this hardware. We anticipate that this will be sometime in the first half of 2021 with the release of ProSelect 2021r1. 

We received our first M1 machine in February, and have done some general testing using ProSelect 2020r1.5 (beta) on this machine.

We have not come across any issues as yet and ProSelect seems to run quite a bit faster than when running on the equivalent Intel-based hardware which is very impressive under emulation. As mentioned above, there are also at least 45 users using ProSelect on M1 machines with no major issues reported (see list below) so it seems quite safe to use ProSelect 2019r2 and newer on these machines.

Please note that on these machines you do need to download and use Rosetta because ProSelect is not yet compiled to run natively on M1 machines.

M1 Reported Issues

1. The ProSelect Lightroom Plugin does not install from either the ProSelect Installer or the separate Lightroom Plugin installer.  We have added a fix for this in the forthcoming 2020r1.5 update. In the meantime, you can install the plugin using Install Lightroom Plugin (under the Help Menu in ProSelect).


(We will update this article with further information as it comes to hand.)


  KnowledgeBase Article: ProSelect on OSX 11 (Big Sur)