loss of spectral analysis?

I am trying to figure if this happened from upgrading Reaper to 2.02, or from the registration key for Spectro. Those two are the only things that changed since my last use in which everything worked as it should. Sounds wonderful, but now there is no spectral reference -just a black graph. Tried adjusting brightness, reset, and even different color maps. Any ideas?

Nevermind. Restart can really work wonders sometimes:)