VSO NuGet Publisher Build Step Fails

Question

I am using Visual Studio Online - Package Manager Preview, along with the new build system. The package manager preview adds a number of build steps, including a \"NuGet Pub

Answer 1

I landed here because I'm researching/configuring an internal deploy -- where I'm running my own NuGet Server (nuget.server, as opposed to visual studio online). The error was the same (or has similar text):

Object reference not set to an instance of an object

My solution, it turned out, was that the URL wasn't right. The correct version is: http://server-name/NuGet/api/v2/package

For completeness, I had: http://server-name/NuGet/ which was wrong.