Oh my goodness. I've been pulling my hair out all morning trying to get lomac to work. I have been away from flight sims for about a year and just recently purchased a new hotas set up and got all my sims working, EXCEPT lomac. Bah.
Thanks for posting this steps, I'm about to follow them exactly because I have had the same issues as you with starforce and getting lomac/flaming cliffs to run.
Will update when done.