The problem is that SmartPSS is a 32-bit application. Apple has been warning macOS users and developers about the end of 32-bit software support for quite some time. With macOS Catalina (macOS 10.15), the end is actually here. 32-bit software just won’t run in macOS Catalina. It won’t be slow, sluggish or result in a warning — 32-bit apps will simply not run or open whatsoever.
Why is Apple dropping support for 32-bit apps in macOS Catalina?
Here's what Apple has to say on the subject:
"All modern Macs include powerful 64-bit processors, and macOS runs advanced 64-bit apps, which can access dramatically more memory and enable faster system performance. The technologies that define today's Mac experience—such as Metal graphics acceleration—work only with 64-bit apps. To ensure that the apps you purchase are as advanced as the Mac you run them on, all future Mac software will eventually be required to be 64-bit."
macOS Catalina (macOS 10.15) will be released as a free update between September and November of 2019.
Why is Apple dropping support for 32-bit apps in macOS Catalina?
Here's what Apple has to say on the subject:
"All modern Macs include powerful 64-bit processors, and macOS runs advanced 64-bit apps, which can access dramatically more memory and enable faster system performance. The technologies that define today's Mac experience—such as Metal graphics acceleration—work only with 64-bit apps. To ensure that the apps you purchase are as advanced as the Mac you run them on, all future Mac software will eventually be required to be 64-bit."
macOS Catalina (macOS 10.15) will be released as a free update between September and November of 2019.