Due to a potential security vulnerability, SmartMusic 2012c was discontinued at the end of October 2015. SmartMusic does provide free updates for the life of your subscription. The latest version of SmartMusic, which is compatible with Mac OS 10.7 and later, can be downloaded from http://www.smartmusic.com/support/downloads/
If necessary, contact Apple to inquire about your options for upgrading your Mac operating system. If you are not able to do so, you can use SmartMusic on an alternate device. Our system requirements can be found here.