I just opened a song that I last worked on yesterday and now all my Audio- Instruments and Midi tracks won't play. I can only hear Audio tracks. The strange thing is that I can play the AI's or my Midi Synths from the keyboard and hear them, but I can't hear what is recorded in the session when I press play. The CPU usage meter shows me, that the AI's are being processed, but not played out. Also, logic behaves with a light delay when I select one of the tracks in the arrange. I use 5 ESX24, one EVD6, one ES 2 and one Absynth, also some EQs and dynamics. Is this a bug or maybe my song is corrupt? Do I have to rebuild the song ? florian