This has been discussed many times in the forum and, it's caused by a problem in your Windows installation, likely the MS VC++ runtimes libraries being corrupted.
First, try a Windows restart and keep ALLOWING the module to run, regardless of what FSX might say about it. Keep doing it a couple of times, after a Windows restart.
If that doesn't work, try to download and install the Stand-Alone Addon Manager for FSX.