If you're getting a message that the beta version has expired when you launch BusyCal, you will need to install the latest version. Here's how:

• Download the latest version of the BusyCal Public Beta
• Replace your existing BusyCal app with the public beta version and launch it.

You may continue running the public beta until the final version is released. Once BusyCal 2.5 is available on the Mac App Store you will be prompted to install the Mac App Store version over the beta version.