OK I think I found the issue. I had a line break in the 1000"s that was missing a 0. When I played in Vocaluxe it must have automatically adjusted because I didn"t notice it. Please let me know if this new one fixes it.
i also didn"t notice anything in particular, but performous indicates overlapping notes when starting the song. other duet songs work fine, so i assume there must be something somewhere unfortunately i can not see exactly where the notes overlap. will try to start in debug mode within the next couple of days and try to find the lines.