Hello! Well today i was mixing down a song and im not sure when it occured it may have happened when i noticed a sort or stutter when playing the song, but suddenly all of the knobs in the mixer have a + symbol by them , and all the levels of everything from busses to tracks went to 0.0+ and now you can barely notice that im using the busses, it lessened everything dynamic wise substantially, if someone could please explain what might have occured and what i can do to bring everything back to normal please let me know, thank you!!!