Hi guys,
Seeing the plugins work in Reaper encouraged me to dig deeper into Sonar, and I found the problem.
I turned of the 64-bit double precision engine option and the plugins worked fine. With the option turned on, the plugins crash. Feels a bit like deja vu when the console emulator hummed with this option on. It appears this is a Sonar bug and has me again wondering the value of this feature...