BassDaddy
Are you able to open it stand alone? Is it in Cakewalk then vst? Is it in program files then vst? Where is it? Are you 32 or 64 bit.? If we get some info this can be fixed.
I second what B-Daddy said.....I always make sure a new VST works in stand alone mode/testing it first before trying it in Sonar.
As Mario said, Sonar needs to know the exact location where EZ Mix is being installed.......for any business to work well, it's all about location, location, location....