Hello I got the CRJ-2 one or 2 months ago, I had REALLY bad FPS, so while checking inside the USER MODIFICATION foler, I found a LIGHT version for weak video cards, I read the READ ME and backed up the old one and replaced the .acf file. When I start X-Plane *9.70* I have to RE_ACTIVATE it,, when i do so, its gives me error (auth). Also tried to use the totally clean shields,, and ALSO i had to RE-Activate it,, it gave me an eror : ERROR "unknown product" ANY HELP? THanks Ahmed