First of all I am a newbie here. Has anyone else experienced this phenomenon? I just upgraded Sonar Platinum to the Hopkinton version and now for some reason I get this error message within Sonar: "VPA PlugIn rejected VPA Host"   Looking for answers on Google to this it may be coming from my Amplitube software. One suggestion elsewhere was to try reauthorizing the software but having done that I'm still not able to get Sonar to work beyond loading songs/tracks. Things were running smoothly up until this recent upgrade so my assumption is it has everything to do with it and from what I gather I can't go back to a previous version of Sonar Platinum once it's upgraded. I'm running Windows 7 Home Edition 64 bit OS. Any ideas?

Hi. Try to do a vst rescan (or even a vst reset), under Preferences (P), File, vst settings.
Best of luck.

Thanks Zarg... While it didn't help I did out it was the updated drivers from IT Multimedia that were causing the issue. For now I've gone back to the previous version and things seem to be good. I will let tech support know it's on their end once they get in touch with me probably tomorrow.
 
Thanks again sir.