For users who have a fresh installation of macOS 10.15 Catalina, or for those who have purchased new products after updating, use this FAQ to help install SampleTank 4, Hammond B-3X, and UNO Drum Editor. Currently these programs are working with macOS Catalina. We have provided compatible updates to the following programs in your IK User Area: AXE I/O Control Panel 1.1b, Custom Shop 1.9, and Authorization Manager 1.0.27.
https://www.ikmultimedia.com/news/?id=macoscatalina
https://www.ikmultimedia.com/faq/?id=1235
Dave