Cubase LE 4 to Cubase Artist 6 Upgrade

Hey Forum,
I just made the upgrade from Cubase LE 4 to Cubase 6 Artist. Really happy with it, but I’m having issues with copying my plugins over and loading up my saved .cpr files.
I’ve copied all of my VST instruments and plugins over to the relevant folders, and initial boot up is fine. However loading my .cpr files causes 6 Artist to freeze :frowning: Is there any way of getting around this? Does anyone know why it’s freezing?