[Discuss-gnuradio] GNU Radio Companion missing source

[GeorgeF]

I just installed GNU on a Ubuntu 14.04 LTS machine.

Here is how I installed it: "sudo apt-get install gnuradio"  All 
appeared good, I thing typed "gnuradio-companion" and got the it up and 
running.

Problem: On the right side of the display I am missing a few things, 1 
of which is SOURCE.  (SINK also is mission).

What did I do wrong?

Thanks
George