as i_am_memory said
it maybe true that orginal space rangers dose not working on sp2hd, but take note that space ranger HD is working by people who created space ranger revolution unofficial patch, and i think they know what they are doing.
one of them said if space ranger meet the minimal sales goal of 1c, they probably can create the sp3 (or whatever its name will be).
i know some of them (not that much) their most important characteristic is that they hear other peoples opinion, so i guess they won't screw up atleast i hope
