I found main problem of this program.. If you reinstall/update you got file
Code:
C:\Users\..yourusername..\AppData\Local\Minion\app\package.cfg
with EMPTY data at
There should be
Code:
app.classpath=C:\Users\..yourusername..\AppData\Local\Minion\app\Minion-jfx.jar
This works for me after few previous and this update.. Until this solve i got javafx, and every possible error writed under posts