If you want to test SNAPSHOT build, you can download it from here.
Follow this tutorial to upgrade from old version.
MyController 1.2.0.Final version released
Unable to change node or sensor names
Heartbeat and smartSleep questions.
distance and custom variable
1.3.0 and 400:Bad Request
How to install Mycontroller on the RaspberryPI (or any other linux/UNIX system)
Widget - Execute Operating System commands
Sensors tab wont load