Sheetmetal - Create flat pattern instance is greyed out???

Hi

I have a standalone sheetmetal part in session. I want to create a flat pattern instance. In Wildfire 4, this was achieved by using the setup/flat pattern utility which prompted the user with a default name for the flat pattern instance.

I cannot duplicate this command in Creo 2. The Create Flat pattern Instance is greyed out and can't be used