The process of writing ADR Toolbox began over ten years ago and many of the underlying frameworks in macOS have changed as Apple has moved core technologies away from desktops to mobile platforms. To address this, much of the application's video and display functions have been rewritten to carry ADR ToolBox forward for several more years. If you purchased ADR ToolBox prior to September 2018, you will need to purchase an update license for $150.00. This license will allow you to use ADR ToolBox 1.98 on macOS Catalina. Version 1.97 will still work on any platform prior to Catalina. If you purchased your license after September 2018, send an email to demo (at) editor-tools.com that includes your iLok account name, and you will receive a new license deposited to your account.