The download link for the Addon Manager on Cloud9 website points to the same file hosted here so, if you downloaded it from here, you would get exactly the same file, that is the same file that is found in the KORD, LSZH installers.
I think that what made a difference in your case was fixing FSUIPC (that is not relevant to any of of products, we don't use it, we don't require it, we don't care if it's installed or not), because the Addon Manager file here, on Cloud9 and inside all the sceneries installers, it's exactly the same.