yes the flight sim freezes.
As I've said, if it freeze as soon as you click the "Addons" menu, that doesn't have anything to do with our software, since at that point, you are just clicking over a standard FSX menu. That's why I asked if it froze when you click on "Addons", or the "Addon Manager".
The most common cause for FSX freezing as soon as you open the top menu bar, is a crash of the uiautomationcore.dll, which a longstanding FSX bug, that doesn't have anything to do with any of our software.
Check if you find an error report of uiautomationcore.dll crashing, in the Windows Event Viewer, under the Application error log, it will confirm this was in fact the cause.