If you're having the same problem as i did, it's because the Technic Launcher won't run on Java 7 (on OS X anyway). Try typing this in Terminal.app:
export JAVA_HOME=/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/
java -jar /Applications/TechnicLauncher.jar
(assuming techniclauncher jar is located in /Applications)
Otherwise, you can try uninstalling/removing Oracle Java 7 from your Mac and restoring Sun Java 6 JDK