NuGet VS 2012 ServicePointManager does not support proxies with the https scheme

Question

I have recently upgraded from VS2012 RC to RTM, and since the upgrade to RTM, I can no longer access nuget. I receive the following error in the Manage NuGet Packages window.

Answer 1

I got this just by having Fiddler installed. I tried starting it and quitting to be sure it wasn't running but still couldn't get Nuget to work. There must be some other hooks left.