Rising Sun runs on Strike Fighters Gold (or SF Project 1 if you still have it) or Wings Over Vietnam as sold at the Thirdwire website.
It does not run on any of Thirdwire's versions that are patched to 2011. That last patch is a mod-killer.
Currently, Thirdwire's site might be in error as to the version being sold but we believe those two older game versions are not yet modified to uselessness.
If all versions become 2011 patched, we have a superior option available.