With the upcoming release of MacOS Catalina 10.15, it is worth noting that this OS version will no longer support any 32-bit applications. These apps will show an icon with a cancel symbol as its icon and attempting to run the app will result in the error below.





If your 4D application is still on 32-bit, you may want to consider taking the 4D 64-bit Readiness Quiz to get a head start before Catalina is officially released.