This is true CellBloc. Sometime ago I bought GameStudio Commercial Edition, since then have upgraded to their A6 version. To protect my content I purchased ThinStall.
http://www.thinstall.com
At the time of purchase, ThinStall was roughly $600. The last version was 2.1 before they went to this studio version idea. But now it cost $5000 per game license.
It's the best protection available for commerical games which require contents be protected.
I still use ThinStall 2.1, but have not tested it on an FPSC game.
Another useful 'Packer' is MoleBox Pro.
http://www.molebox.com. At the time, they had problems packing 3DGS Games. They have come far since then and worth a look. I have not tried this one on FPSC either, but worth a shot, and priced around $50 - $100, but unlimited packing license.