Unlock code, cant download templetes

My laptop is playing up so purchased a new one and installed Xara Designer pro again and added my serial number.
However, I cannot install the templates. It downloads the Xara designer Pro 7 Content Pack Setup but does not install them. A message states 'The installation is only possible after unlocking Xara designer Pro 7' but does not allow me to add in my serial number again.

Ok, sorted. Had to use the installation disc first.