The element menu bar is gray and will not work

I am using Windows 8.1 32 bit and audacity version 2.0.6 downloaded from .exe installer. When I try to use the Noise Removal I access Effect>Noise Removal and I get no response. I am trying to obtain a noise profile so I can remove a humming sound and hiss from the recording. How can I get the element menu to respond?

You need to be in Stop and not Pause to get the tools to work.