So we only have to re download and run the addon manager..ok Thanks
You don't have to redownload anything (but it won't cause any problems if you do), you only need to RUN an existing installer of any FSDT product you already have, provided it was new enough to support AT LEAST 2.4.
The updated file (bglmanx.dll) will be downloaded automatically by any of our installers, so there's no need to redownload any installer, not even the Stand-Alone Addon Manager installer.
The ONLY case when you have to redownload a product installer or the Stand-Alone Addon Manager installer, is when your existing installer didn't supported 2.4, but you'll see a clear error message from the installer, saying the P3D version is not recognized. ONLY in THIS case, you'll have to redowload the installer too.
In ALL other cases, you only need to RUN any installer you already have.