Prologue?
Last night I spent one of those exploratory hours previewing most of the included soft synths while looking for a certain sound.
Under VST3 there is just one synth Prologue. When I tried to open it, a box popped up asking if I wanted this unknown program to run and then Sonar crashed before I responded.
I set Sonar to always run as administrator so it's not that unless that reverts during an update.
I don't think I need this synth but just wondering as I have not had a crash in a long time.