Hi. My name is ilya and sorry for my very bad english ----- i have 2 OS - Mavericks and Yosemite. And i have x-plane 10.25 i buy CRJ-200 and thy to open it. But i can't, because engines and others thinks is unaveable I dont`t know, what i need to do, because i read a lot of you forums at this questions, but CRJ-200 unaveable.... can you help me, please, and i can give all information, if u need. i try to ran x-plane 32 and 64 bit.. but maybe because i have DEMO X-PLANE.. but i don't think so, that in i have demo, i can't start engines on crj-200.. please, help me, and sorry for me english((