It sounds as though it's just the Mixer FX feature. First of all, I would suggest updating to version 3.1.1, as this has a number of bug fixes since 3.0.2 was released. To disable the Mixer FX: 1) In the menubar, select Window, then Mixer FX (this will open the Mixer FX window) 2) On the Mixer FX window, disable all of the pink and yellow buttons