Hi Lunatech. Sorry you're having trouble. I would try a few more things that reset the display in Sonar. A Lens is in effect even if you didn't set one. I would try toggling between a couple of the Lens settings (try setting to Basic, then Advanced, then Mixing, etc). Also, what happens if you use
Shift + F to set the tracks to full scale? Try hiding and re-opening the Inspector (I), Browser (B), Dock (D), Control Bar (C), etc to see if that helps. Also, try switching Themes between Tungsten and Mercury to see if that resets things.