I don't mean to steer off topic but I've never been able to use mine without crashing Sonar.
It is my only plugin with iLOK and I've been assuming the iLOK drivers are the culprit. I installed the 64 bit drivers as I recall.
Now I see you all apparently have no problems running Harmony EFX so I'm curious if you are 64 bit and, if so, which drivers you are running. I wouldn't mind getting mine to work...
I used it here:
http://robbykband.bandcamp.com/track/song-for-emmylou to fill out the lead but very painfully, sufferred through dozens of crashes. That also probably was back with Sonar 7.
Thanks!