As of May 1, 2015 Proclaim will no longer support OS X Mountain Lion (10.8). This change in OS X version support will allow us to continue making Proclaim even better!
Upgrading to Yosemite (10.10) should be free if you're coming from a version of OS X currently supported by Proclaim.
We'll be tracking OS X version usage and listening to your feedback in the coming days. Please reply back to this thread or give customer service a call at 800-875-6467 if you have any questions.