I had that "it crashes as soon as I try to change anything" issue right from my upgrade to Win8.1 . Today I decided to reinstall FSX/A completely and... I am unable to get it to run, it crashes to desktop every time I hit the "Start Flight" button...
As far as I know, thei are pretty busy working on a professional version of the 206, they still have the Uh-1H project in mind, somehow, but I wouldn't wait for it.