I'm experiencing hanging notes with Finale/VE pro/Synchron player: when I press stop in Finale the notes are going on until I stop the VE Pro engine. (all programs last update)
Additionally, after working fine for a while, one instrument was stopping receiving keyswitches from Human Playback, while all the others were working well.
I supposed that some problem with MIDI data-flow exist between Finale and VE Pro, impacting Synchron Player only, because nothing similar was happening before with VI Pro instruments. (and other lybraries).
Now listening to you, I may suppose that SY Player scripts have still some little issue, but instead of supposing, I wait full of hope real debugging ;)