Sorry this is just another problem post. My old hard disc had to be replaced but after installing as ADMIN into new one, rebooting, rescanning VSTs many times ... I can't get it to authorize though both the serial number and registration code are the same as in Cakewalk account.
 
"Invalid registration code"
 
Any other ideas?
 
Dan

Run the stand alone version of DPRo as administrator and try registering with it

A thousand thanks Scook. I ran it as admin and got the same response but went back in Sonar and it opened w/o asking for anything!