ROS Electric Install "unable to locate package"
I'm trying to roll back to ROS Electric because of an error I'm receiving with Gazebo (as described here: http://answers.ros.org/question/37072/gazebo-sdf-has-no-gazebo-element/) ...or at least I think it's related to those two things. But, in order to do that, I have to use the sudo apt-get install ros-electric-desktop-full command... however I'm receiving the "unable to locate package..." error.
Is Electric no longer available?
Try removing ros-electric-desktop-* (or via a search in synaptic).
Synaptic only has ros-fuerte listed and running ros-electric-desktop gives me the same error as above.