People, did you completely unistall all of the 777 components from your hard drive and FSX folder,did you reboot after install? If you did all of the above things then do it again, but before you reinstall this time clean your registry with a cleaner then reboot.  I learned that a lot of the problems I was having with my add ons was my FSX, I did a complete reinstall of FSX and started with fresh XML and CFG,and Jesus tweaks CFG,and it has improved a 100 fold! I suggest a 6 month reinstall of FSX and that can sometimes help with issues ,especially if you have added or removed add ons in the last 6 months. Just some advice 8-)