Your message is not very clear. Are you saying you are not downloading the updated Addon Manager, because you THINK this was the cause of FSX not loading "the last time it happened" ?
The problem of FSX not loading has been explained too many times already, and it's NOT caused by the Addon Manager, of course. As explained in the relevant sticky thread here:
http://www.fsdreamteam.com/forum/index.php/topic,10489.0.htmlIf you are having that problem, by connecting with Teamviewer, we can show you what the REAL cause is.
However, the current version of the Addon Manager, also has an error message before quitting, which will help you figure out what the REAL cause is, even without a Teamviewer connection.
But of course, if need help, we are always available for assistance with Teamviewer. For THIS specific issue ONLY, which is "FSX not starting".