Suddenly then KDEN for instance would disappear from the Add On menu
A scenery is not supposed to be in the "Addons menu", if with "Addon menu" you mean the FSX "Addons menus".
If, instead, you mean the "Addon Manager" menu instead, you cannot lost just an entry. If the antivirus has blocked the download of some files, resulting in a mix of new and outdated files, it's possible you might lose an entire group of products, for example the *whole* Flightbeam entry.
If this is the case, the cause it's likely the antivirus.
I uninstalled Add On and GSX then downloaded and installed fresh versions with Anti Virus switched off. Some airports reappeared whilst others still did not.
As explained in all threads about the antivirus, when the problem is caused by a defective antivirus, it's not enough to switch it off, you must ALSO configure it to exclude the following files from scanning:
YourFSXFolder\bglmanx.dll
YourFSXFolder\fsdreamteam\Couatl\Couatl.exe
BEFORE launching FSX
Now when trying to load an FSDT or FB airport I get a message saying that an unknown add-on has caused Couatl Scripting Engine to restart.
The message doesn’t say just that. It says to check your Couatl.ERR file for details about the error, indicating its actual location on your system. Please post the content of your Couatl.ERR file.
