Hi, Here's another example of what Greg just said.
I've got the Sony movie studio platinum suite 2013 and it comes with soundforge 10 and loads of effects that Mixcraft recognises and can utilise quite easily but the one effect that refuses to play ball is Izotope. I too get the message "this software is not registered with this program and will close" so sorry to tell but Izotope only allows soundforge to use it.
