hi RoverDude,
Your mod Orion_0.3.2.0 dont work for me in KSP 1.2.1.1604 (WindowsPlayer x64)
I tried with no other mod except HyperEdit [v1.5.3]
My vx was simply : Mk1 cmd pod, Orion pulse unit magazine, Orion Pulse engine or Medusa
I Start a new game, sandbox mode, and test in space
My GameData : Squad, 000_USITools, Firespitter,UmbraSpaceIndustries
PS : I tried the same test with Orion_0.2.4.0 in my old Ksp version (KSP 1.1.31289 (x64)) and its work fine.
Hope its can help u.