You need to update Cloud9's Bergen to the latest SP2-compatibile version, have a look here:
http://forum.fscloud9.it/viewtopic.php?t=5007Of that .ZIP file, take only the BGL, and replace the existing one in the FSX\Cloud9\Bergen\Scenery folder. Do not use the included bglmanx.dat file, because the latest one that come with the latest Addon Manager is already taking into account this later fix, and it's newer. So, just update the BGL.
P.S.
I've removed other messages, because this is the correct solution, so it would be simpler for others to refer to it in the future, without being confused by an unnecessarily long thread.