[Discuss-gnuradio] GNU Radio Companion missing source

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


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