Same situation here, i have a direct email support with Old Prop, stil waiting for an answer, a same as maca11, only basics works, no mather what weather you have, time, only works the basics, in same conditions, 737, 787 works like a charm, but not 747. i hope old Prop can have a solution or workarround, i tried reinstalling all but its the same.
Keven Menard are you the one who reads the ---@---.com account? all detail is there, if not, let me know how can i let you get all the information.