Just for your information: when I look in the FSX.CFG afterwards, so after starting FSX twice, one line with bglmanx.dll in it is back.
Are you sure you haven't trusted anything coming from "Virtuali s.a.s." ? In that case, this behaviour would be normal, and it's fine. However, if FSX SP2 is correctly installed, the module SHOULD run!
NOTE: it's a known FSX bug (and it's explained on the manual as well) that, the *first* time a module is trusted (regardless if it has been trusted by you explicitely, or by Windows on your behalf if you choose to trust anything coming from us automatically), it would not run immediately. You need to clean exit from FSX, then re-launch it again, and from that moment, the module will run.
If you are *really* sure you never trusted this module ever, and you never instructed Windows to trust anything from us, even during with previous installations of other sceneries that use the Addon Manager (like Cloud9, Aerosoft Florence, etc), then something else is wrong either with your Windows installation, or there's a conflict with another module we never heard of. OR, your FSX SP2 installation wasn't entirely successful.
NOTE: there are 3 versions of Simconnect active on your system, if you had FSX, then FSX SP1 and then FSX + SP2. These versions are all available at the same time. The fact that *other* addons that maybe use the FSX or the FSX SP1 version of Simconnect runs correctly, doesn't mean your SP2 Simconnect is working. It's perfectly possible to end up in a situation with the other 2 Simconnects installed fine (with all the addons using them working), and having the SP2 Simconnect not working, so only the modules requiring this one (like our Addon Manager) would't run.
You can try to activate the Simconnect diagnostic mode:
Open notepad, and copy the following text:
[SimConnect]
level=verbose
console=1
RedirectStdOutToConsole=1
OutputDebugString=1
; file=c:\simconnect%03u.log
; file_next_index=0
; file_max_index=9
Save the file as SIMCONNECT.INI in this folder:
Documents And Settings\YOUR LOGIN NAME\Documents\Microsoft Flight Simulator X Files
At the next FSX launch, you should see a text window with diagnostic message, that should tell you what's going wrong. Let me know what you are getting, so we can have an idea what's happening.