v strange happenings today: L9.1.1 OSX 10.6.4 a short project with 2 MIDI tracks and 3 audio. On screenset 1 I have arrange on one monitor and mixer on the other there are 9 tracks on view: o No output o vocal x 4 o trombone o flute o MIDI piano o click screenset 2 is exactly the same except that where 1. is zoomed out to see the whole song, 2. is zoomed in for more detailed editing. yet when I switch to screenset 2, I only see 2 trombone tracks with identical regions. One of them has a cut region, which doesn't exist in screenset 1. although it coincides with a cut in the vocal region, the mixer on the other monitor only shows one audio track (trombone), and I can't select the regions with my mouse. I've deleted the screenset and replaced it with a clone of 1. and that's OK so far. any ideas why this has happened - it all takes time away from production of course :-( pete There are no other songs in the background.