The latest version of Bergen works with SP2 or Acceleration Pack, you just need to install this fix, after installing the scenery:
http://www.virtualisoftware.com/binaries/enbr_sp2_fix.zipThere's no "Cloud9" version of the Addon Manager, the Addon Manager is just one, and it's ours, Cloud9 is just using it under license. If you check the download link at Cloud9 website, you'll see it's pointing back to here. Previously, Cloud9 used its own installer, but we agreed it didn't make much sense, since files are the same anyway: it should be better for users is the installer is just one.
However, even if the Addon Manager is just the same, each publisher/product can offer different options, like different trial time, different activation policy, and different payment. In this case Cloud9 products do not support the "Buy on Web / PayPal" option like ours so, that option will be unavailable.