Can't add nets to schematic
I have moved from version 3 to version 4 and am starting a new design. All went well until I tried to add my first net; I got the error message "Unable to add net as there are not net classes assigned to this design". Version 3 creates a design with defaults to allow schematic entry straight away but version 4 needs some setup first.
I tried looking in Settings -> Preferences and although there was an option to set the technologies directory, I am not sure as to where I set the technology file for defining net classes before I can start schematic entry.