I advise being careful using JVC, as it tries to be smarter than it's good for itself. In a standard THost-game, JVC recognizes the three Proton Torpedo Launchers as being Tech 2, and therefore sets the torpedo techlevel to 2 without paying the 100mc for it. "It must already have been level 2, how else should the tubes have been produced?" Needless to say that Host.exe doesn't like this behaviour very much. This can be avoided by manually buying torp tech 2.
: You beamed that 10,000 megacredits down to a worthless lump of rock.
H2R: It isn't worthless anymore.