Sorry but when you make an awesome synth with so many possibilities but it's unstable, people ask questions. Using Reaper 4.13 in Windows Vista 32, Zyn still crashes my host upon exit, and also crashes on the first note-on when playing a saved project.
The question I want to ask, though, is related to workflow: Will Zyn ever be able to be edited without all of the "pop-up" windows? It would be nice if the GUI would just change instead of opening up a new window every time I want to edit a parameter. With 2 or 3 engines running, window management becomes an exercise in futility; I spend as much time opening and closing dialog boxes as I do actually making the sound.

concerning the 2 bugs, you haven't mentioned the VST version you are using.

considering the GUI rework, it's not going to be me that does that (not anytime soon, anyway )