Thread - Parts split into separate movements

You combined the score and parts into a single file (which is fine) but you still have files for each. Unless they are really intended to be stand-alone movements, this is not the way to do it. The best way is to have the score (all movements), and each of the parts (containing all movements). With a piano trio there is never really any need for a separate piano part as the pianst typically plays from the score. The Reunion Trio has 4 distinctly titled movements so the separate scores and parts are allowed if these are intended to exist as stand-alones as well as a single 4-movement work.