macOS Catalina only runs 64-bit apps. What if you have a scanner app that is 32-bits? Ed Hardy has the solution:
32-bit Mac apps used to be the standard, but that was back in the days of 32-bit processors. Apple long ago moved to 64-bit chips and 64-bit software. Still, macOS allowed legacy apps to stick around.
That stopped with Catalina.
Anyone with an older scanner incompatible with macOS Catalina can try VueScan, third-party software that works with over 6000 scanners from 42 manufacturers.
I love this app.