Re: message on startup 'Sonarplt has stopped working'
1) always run as administrator
2) likely a plugin. Try safe mode (shift while starting the program) to load plugins selectively to determine which one(s) is/are the problems. Start by removing the 32 bit plugins first of all.
SONAR Platinum x64 lifetime, Presonus Audiobox 1818VSL
ASUS P5QSE+,Intel Quad Q8400, 8 GB, Win 10 Pro x64