O macOS Catalina 10.15 It is now available to all users, and it is generally recommended that if you have a compatible Mac, upgrade as soon as possible to take advantage of new system features and to stay on top of all security updates Apple implements. over the next year.
However, at least for a group of users, Ma is recommending to wait before the upgrade: I refer to the DJs and other users who use the iTunes XML Libraries to organize your music. For now, the general orientation that these people stay on macOS Mojave at least until the applications they use are updated to work on the new system.
From macOS Catalina, the extinction of iTunes has brought some side effects among them, the end of support for XML libraries, files used by certain users to carry information from playlists between applications. Many DJs, in particular, are highly dependent on this format because they use (or use) iTunes to organize their large music library and export their playlists to other mixing apps through XML files.
In macOS Catalina, the new Music app uses another, more modern library format to share information about playlists between apps; This format, however, is not compatible with XML files, which can cause certain mixing applications to “break” with the update to the new version of the system without being able to access the user's music catalog.
Not surprisingly, Apple has not let these applications see ships. Developers can update their apps so that they typically integrate with new macOS Catalina music libraries, but of course not all software is magically updated as soon as a problem arises. Therefore, users who use the XML libraries should check that their applications are already up to date to work in harmony with the new system.
Strictly speaking, Apple has been alerting developers to this issue for years: Since iTunes 11, released around 2014, Ma j has offered an SDK for apps to integrate the music software library in-depth without XML files are required. Applications that have adopted this SDK, such as djay pro, normally work with the macOS Catalina Music app. No need to make any changes to the software code. Other apps like Serato it's the VirtualDJ, are already testing to adapt new technology to the new system.
Stay tuned, therefore.
via The Verge
Update 10/09/2019 at 16:30
Apparently, advanced users of the Photoshop It's from Lightroom on Mac should also take some caution before upgrading to macOS Catalina. Officially, the latest versions of software are compatible with the system, but users have found some bugs here and there in their workings.
As reported by AppleInsider, O Photoshop CC 20.0.6 There is a problem with the “Save As” screen: When changing the format of a file to be saved, the application will not change the filename extension automatically; you will have to do it manually.
In addition, some users have had problems installing plugins, with error messages preventing the process on the other hand, plugins already installed prior to Catalina upgrade appear to be intact. Adobe lists the solutions to some of these problems on this page.
O Lightroom Classic 8.4.1, in turn, has a minor bug: the camera linking tool (tether) does not detect Nikon models if they are connected after the selection of the binding tool; In this case, just make sure the camera is turned on before activating the feature.