SP2 for Graphics Suite X3 won't install

Hi....had original release of X3 and only realized there were two patch updates available.  SP1 installed without any problem.  Tried to install SP2 and I keep getting the message that the serial number is invalid. 

I'm not really sure I even need the SP2, but I can't seem to find Bitstream Font Navigator in my CorelDraw X3 program, and thought installing all the updates might help that. 

Thanks!

Jane